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[apt.git] / apt-pkg / contrib / strutl.cc
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1// -*- mode: cpp; mode: fold -*-
2// Description /*{{{*/
d48c6a7d 3// $Id: strutl.cc,v 1.48 2003/07/18 14:15:11 mdz Exp $
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4/* ######################################################################
5
b2e465d6 6 String Util - Some useful string functions.
6c139d6e 7
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8 These have been collected from here and there to do all sorts of useful
9 things to strings. They are useful in file parsers, URI handlers and
24231681 10 especially in APT methods.
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11
12 This source is placed in the Public Domain, do with it what you will
24231681 13 It was originally written by Jason Gunthorpe <jgg@gpu.srv.ualberta.ca>
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14
15 ##################################################################### */
16 /*}}}*/
17// Includes /*{{{*/
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18#include <config.h>
19
cdcc6d34 20#include <apt-pkg/strutl.h>
7049d16d 21#include <apt-pkg/fileutl.h>
b2e465d6 22#include <apt-pkg/error.h>
0a8a80e5 23
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24#include <stddef.h>
25#include <stdlib.h>
26#include <time.h>
27#include <string>
28#include <vector>
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29#include <ctype.h>
30#include <string.h>
5076b3c2 31#include <sstream>
6c139d6e 32#include <stdio.h>
152ab79e 33#include <algorithm>
2b154e53 34#include <unistd.h>
b2e465d6 35#include <regex.h>
b0db36b1 36#include <errno.h>
b2e465d6 37#include <stdarg.h>
a52f938b 38#include <iconv.h>
0db4a45b 39
ea542140 40#include <apti18n.h>
6c139d6e 41 /*}}}*/
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42using namespace std;
43
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44// Strip - Remove white space from the front and back of a string /*{{{*/
45// ---------------------------------------------------------------------
46namespace APT {
47 namespace String {
b5787388 48std::string Strip(const std::string &str)
65dbd5a1 49{
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50 // ensure we have at least one character
51 if (str.empty() == true)
52 return str;
53
54 char const * const s = str.c_str();
55 size_t start = 0;
56 for (; isspace(s[start]) != 0; ++start)
57 ; // find the first not-space
58
59 // string contains only whitespaces
60 if (s[start] == '\0')
65dbd5a1 61 return "";
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62
63 size_t end = str.length() - 1;
64 for (; isspace(s[end]) != 0; --end)
65 ; // find the last not-space
66
67 return str.substr(start, end - start + 1);
65dbd5a1 68}
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69
70bool Endswith(const std::string &s, const std::string &end)
71{
72 if (end.size() > s.size())
73 return false;
74 return (s.substr(s.size() - end.size(), s.size()) == end);
75}
76
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77bool Startswith(const std::string &s, const std::string &start)
78{
79 if (start.size() > s.size())
80 return false;
81 return (s.substr(0, start.size()) == start);
82}
83
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84}
85}
86 /*}}}*/
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87// UTF8ToCodeset - Convert some UTF-8 string for some codeset /*{{{*/
88// ---------------------------------------------------------------------
89/* This is handy to use before display some information for enduser */
90bool UTF8ToCodeset(const char *codeset, const string &orig, string *dest)
91{
92 iconv_t cd;
93 const char *inbuf;
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94 char *inptr, *outbuf;
95 size_t insize, bufsize;
96 dest->clear();
97
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98 cd = iconv_open(codeset, "UTF-8");
99 if (cd == (iconv_t)(-1)) {
100 // Something went wrong
101 if (errno == EINVAL)
102 _error->Error("conversion from 'UTF-8' to '%s' not available",
103 codeset);
104 else
105 perror("iconv_open");
106
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107 return false;
108 }
109
b39c1859 110 insize = bufsize = orig.size();
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111 inbuf = orig.data();
112 inptr = (char *)inbuf;
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113 outbuf = new char[bufsize];
114 size_t lastError = -1;
a52f938b 115
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116 while (insize != 0)
117 {
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118 char *outptr = outbuf;
119 size_t outsize = bufsize;
1f99b6d3 120 size_t const err = iconv(cd, &inptr, &insize, &outptr, &outsize);
b39c1859 121 dest->append(outbuf, outptr - outbuf);
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122 if (err == (size_t)(-1))
123 {
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124 switch (errno)
125 {
126 case EILSEQ:
127 insize--;
128 inptr++;
129 // replace a series of unknown multibytes with a single "?"
130 if (lastError != insize) {
131 lastError = insize - 1;
132 dest->append("?");
133 }
134 break;
135 case EINVAL:
136 insize = 0;
137 break;
138 case E2BIG:
139 if (outptr == outbuf)
140 {
141 bufsize *= 2;
142 delete[] outbuf;
143 outbuf = new char[bufsize];
144 }
145 break;
146 }
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147 }
148 }
a52f938b 149
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150 delete[] outbuf;
151
152 iconv_close(cd);
153
154 return true;
155}
156 /*}}}*/
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157// strstrip - Remove white space from the front and back of a string /*{{{*/
158// ---------------------------------------------------------------------
159/* This is handy to use when parsing a file. It also removes \n's left
160 over from fgets and company */
161char *_strstrip(char *String)
162{
163 for (;*String != 0 && (*String == ' ' || *String == '\t'); String++);
164
165 if (*String == 0)
166 return String;
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167 return _strrstrip(String);
168}
169 /*}}}*/
170// strrstrip - Remove white space from the back of a string /*{{{*/
171// ---------------------------------------------------------------------
172char *_strrstrip(char *String)
173{
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174 char *End = String + strlen(String) - 1;
175 for (;End != String - 1 && (*End == ' ' || *End == '\t' || *End == '\n' ||
176 *End == '\r'); End--);
177 End++;
178 *End = 0;
179 return String;
d3e8fbb3 180}
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181 /*}}}*/
182// strtabexpand - Converts tabs into 8 spaces /*{{{*/
183// ---------------------------------------------------------------------
184/* */
185char *_strtabexpand(char *String,size_t Len)
186{
187 for (char *I = String; I != I + Len && *I != 0; I++)
188 {
189 if (*I != '\t')
190 continue;
191 if (I + 8 > String + Len)
192 {
193 *I = 0;
194 return String;
195 }
196
197 /* Assume the start of the string is 0 and find the next 8 char
198 division */
199 int Len;
200 if (String == I)
201 Len = 1;
202 else
203 Len = 8 - ((String - I) % 8);
204 Len -= 2;
205 if (Len <= 0)
206 {
207 *I = ' ';
208 continue;
209 }
210
211 memmove(I + Len,I + 1,strlen(I) + 1);
212 for (char *J = I; J + Len != I; *I = ' ', I++);
213 }
214 return String;
215}
216 /*}}}*/
217// ParseQuoteWord - Parse a single word out of a string /*{{{*/
218// ---------------------------------------------------------------------
219/* This grabs a single word, converts any % escaped characters to their
220 proper values and advances the pointer. Double quotes are understood
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221 and striped out as well. This is for URI/URL parsing. It also can
222 understand [] brackets.*/
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223bool ParseQuoteWord(const char *&String,string &Res)
224{
225 // Skip leading whitespace
226 const char *C = String;
227 for (;*C != 0 && *C == ' '; C++);
228 if (*C == 0)
229 return false;
230
231 // Jump to the next word
36f610f1 232 for (;*C != 0 && isspace(*C) == 0; C++)
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233 {
234 if (*C == '"')
235 {
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236 C = strchr(C + 1, '"');
237 if (C == NULL)
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238 return false;
239 }
240 if (*C == '[')
241 {
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242 C = strchr(C + 1, ']');
243 if (C == NULL)
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244 return false;
245 }
246 }
247
248 // Now de-quote characters
249 char Buffer[1024];
250 char Tmp[3];
251 const char *Start = String;
252 char *I;
253 for (I = Buffer; I < Buffer + sizeof(Buffer) && Start != C; I++)
254 {
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255 if (*Start == '%' && Start + 2 < C &&
256 isxdigit(Start[1]) && isxdigit(Start[2]))
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257 {
258 Tmp[0] = Start[1];
259 Tmp[1] = Start[2];
1bc849af 260 Tmp[2] = 0;
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261 *I = (char)strtol(Tmp,0,16);
262 Start += 3;
263 continue;
264 }
265 if (*Start != '"')
266 *I = *Start;
267 else
268 I--;
269 Start++;
270 }
271 *I = 0;
272 Res = Buffer;
273
274 // Skip ending white space
36f610f1 275 for (;*C != 0 && isspace(*C) != 0; C++);
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276 String = C;
277 return true;
278}
279 /*}}}*/
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280// ParseCWord - Parses a string like a C "" expression /*{{{*/
281// ---------------------------------------------------------------------
b2e465d6 282/* This expects a series of space separated strings enclosed in ""'s.
08e8f724 283 It concatenates the ""'s into a single string. */
b2e465d6 284bool ParseCWord(const char *&String,string &Res)
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285{
286 // Skip leading whitespace
287 const char *C = String;
288 for (;*C != 0 && *C == ' '; C++);
289 if (*C == 0)
290 return false;
291
292 char Buffer[1024];
293 char *Buf = Buffer;
294 if (strlen(String) >= sizeof(Buffer))
295 return false;
296
297 for (; *C != 0; C++)
298 {
299 if (*C == '"')
300 {
301 for (C++; *C != 0 && *C != '"'; C++)
302 *Buf++ = *C;
303
304 if (*C == 0)
305 return false;
306
307 continue;
308 }
309
310 if (C != String && isspace(*C) != 0 && isspace(C[-1]) != 0)
311 continue;
312 if (isspace(*C) == 0)
313 return false;
314 *Buf++ = ' ';
b2e465d6 315 }
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316 *Buf = 0;
317 Res = Buffer;
b2e465d6 318 String = C;
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319 return true;
320}
321 /*}}}*/
6d5dd02a 322// QuoteString - Convert a string into quoted from /*{{{*/
1bc849af 323// ---------------------------------------------------------------------
6d5dd02a 324/* */
171c75f1 325string QuoteString(const string &Str, const char *Bad)
1bc849af 326{
b8eba208 327 std::stringstream Res;
f7f0d6c7 328 for (string::const_iterator I = Str.begin(); I != Str.end(); ++I)
1bc849af 329 {
b8eba208 330 if (strchr(Bad,*I) != 0 || isprint(*I) == 0 ||
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331 *I == 0x25 || // percent '%' char
332 *I <= 0x20 || *I >= 0x7F) // control chars
1bc849af 333 {
b8eba208 334 ioprintf(Res,"%%%02x",(int)*I);
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335 }
336 else
b8eba208 337 Res << *I;
1bc849af 338 }
b8eba208 339 return Res.str();
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340}
341 /*}}}*/
6d5dd02a 342// DeQuoteString - Convert a string from quoted from /*{{{*/
6c139d6e 343// ---------------------------------------------------------------------
6d5dd02a 344/* This undoes QuoteString */
171c75f1 345string DeQuoteString(const string &Str)
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346{
347 return DeQuoteString(Str.begin(),Str.end());
348}
349string DeQuoteString(string::const_iterator const &begin,
350 string::const_iterator const &end)
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351{
352 string Res;
f7f0d6c7 353 for (string::const_iterator I = begin; I != end; ++I)
6c139d6e 354 {
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355 if (*I == '%' && I + 2 < end &&
356 isxdigit(I[1]) && isxdigit(I[2]))
6c139d6e 357 {
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358 char Tmp[3];
359 Tmp[0] = I[1];
360 Tmp[1] = I[2];
361 Tmp[2] = 0;
362 Res += (char)strtol(Tmp,0,16);
363 I += 2;
364 continue;
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365 }
366 else
367 Res += *I;
368 }
6d5dd02a 369 return Res;
6c139d6e 370}
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371
372 /*}}}*/
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373// SizeToStr - Convert a long into a human readable size /*{{{*/
374// ---------------------------------------------------------------------
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375/* A max of 4 digits are shown before conversion to the next highest unit.
376 The max length of the string will be 5 chars unless the size is > 10
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377 YottaBytes (E24) */
378string SizeToStr(double Size)
379{
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380 double ASize;
381 if (Size >= 0)
382 ASize = Size;
383 else
384 ASize = -1*Size;
b8eba208 385
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386 /* bytes, KiloBytes, MegaBytes, GigaBytes, TeraBytes, PetaBytes,
387 ExaBytes, ZettaBytes, YottaBytes */
7f25bdff 388 char Ext[] = {'\0','k','M','G','T','P','E','Z','Y'};
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389 int I = 0;
390 while (I <= 8)
391 {
392 if (ASize < 100 && I != 0)
393 {
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394 std::string S;
395 strprintf(S, "%'.1f %c", ASize, Ext[I]);
396 return S;
6c139d6e 397 }
b8eba208 398
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399 if (ASize < 10000)
400 {
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401 std::string S;
402 strprintf(S, "%'.0f %c", ASize, Ext[I]);
403 return S;
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404 }
405 ASize /= 1000.0;
406 I++;
407 }
b8eba208 408 return "";
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409}
410 /*}}}*/
411// TimeToStr - Convert the time into a string /*{{{*/
412// ---------------------------------------------------------------------
413/* Converts a number of seconds to a hms format */
414string TimeToStr(unsigned long Sec)
415{
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416 std::string S;
417 if (Sec > 60*60*24)
6c139d6e 418 {
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419 //TRANSLATOR: d means days, h means hours, min means minutes, s means seconds
420 strprintf(S,_("%lid %lih %limin %lis"),Sec/60/60/24,(Sec/60/60) % 24,(Sec/60) % 60,Sec % 60);
421 }
422 else if (Sec > 60*60)
423 {
424 //TRANSLATOR: h means hours, min means minutes, s means seconds
425 strprintf(S,_("%lih %limin %lis"),Sec/60/60,(Sec/60) % 60,Sec % 60);
426 }
427 else if (Sec > 60)
428 {
429 //TRANSLATOR: min means minutes, s means seconds
430 strprintf(S,_("%limin %lis"),Sec/60,Sec % 60);
431 }
432 else
433 {
434 //TRANSLATOR: s means seconds
435 strprintf(S,_("%lis"),Sec);
6c139d6e 436 }
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437 return S;
438}
439 /*}}}*/
440// SubstVar - Substitute a string for another string /*{{{*/
441// ---------------------------------------------------------------------
1e3f4083 442/* This replaces all occurrences of Subst with Contents in Str. */
171c75f1 443string SubstVar(const string &Str,const string &Subst,const string &Contents)
6c139d6e 444{
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445 if (Subst.empty() == true)
446 return Str;
447
8efa2a3b 448 string::size_type Pos = 0;
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449 string::size_type OldPos = 0;
450 string Temp;
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451
452 while (OldPos < Str.length() &&
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453 (Pos = Str.find(Subst,OldPos)) != string::npos)
454 {
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455 if (OldPos != Pos)
456 Temp.append(Str, OldPos, Pos - OldPos);
457 if (Contents.empty() == false)
458 Temp.append(Contents);
459 OldPos = Pos + Subst.length();
6c139d6e 460 }
224dc038 461
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462 if (OldPos == 0)
463 return Str;
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464
465 if (OldPos >= Str.length())
466 return Temp;
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467 return Temp + string(Str,OldPos);
468}
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469string SubstVar(string Str,const struct SubstVar *Vars)
470{
471 for (; Vars->Subst != 0; Vars++)
472 Str = SubstVar(Str,Vars->Subst,*Vars->Contents);
473 return Str;
474}
6c139d6e 475 /*}}}*/
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476// OutputInDepth - return a string with separator multiplied with depth /*{{{*/
477// ---------------------------------------------------------------------
478/* Returns a string with the supplied separator depth + 1 times in it */
479std::string OutputInDepth(const unsigned long Depth, const char* Separator)
480{
481 std::string output = "";
482 for(unsigned long d=Depth+1; d > 0; d--)
483 output.append(Separator);
484 return output;
485}
486 /*}}}*/
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487// URItoFileName - Convert the uri into a unique file name /*{{{*/
488// ---------------------------------------------------------------------
489/* This converts a URI into a safe filename. It quotes all unsafe characters
490 and converts / to _ and removes the scheme identifier. The resulting
491 file name should be unique and never occur again for a different file */
171c75f1 492string URItoFileName(const string &URI)
ad00ae81 493{
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494 // Nuke 'sensitive' items
495 ::URI U(URI);
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496 U.User.clear();
497 U.Password.clear();
498 U.Access.clear();
54cf15cb 499
ad00ae81 500 // "\x00-\x20{}|\\\\^\\[\\]<>\"\x7F-\xFF";
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501 string NewURI = QuoteString(U,"\\|{}[]<>\"^~_=!@#$%^&*");
502 replace(NewURI.begin(),NewURI.end(),'/','_');
503 return NewURI;
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504}
505 /*}}}*/
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506// Base64Encode - Base64 Encoding routine for short strings /*{{{*/
507// ---------------------------------------------------------------------
508/* This routine performs a base64 transformation on a string. It was ripped
509 from wget and then patched and bug fixed.
510
511 This spec can be found in rfc2045 */
171c75f1 512string Base64Encode(const string &S)
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513{
514 // Conversion table.
515 static char tbl[64] = {'A','B','C','D','E','F','G','H',
516 'I','J','K','L','M','N','O','P',
517 'Q','R','S','T','U','V','W','X',
518 'Y','Z','a','b','c','d','e','f',
519 'g','h','i','j','k','l','m','n',
520 'o','p','q','r','s','t','u','v',
521 'w','x','y','z','0','1','2','3',
522 '4','5','6','7','8','9','+','/'};
523
524 // Pre-allocate some space
525 string Final;
526 Final.reserve((4*S.length() + 2)/3 + 2);
527
528 /* Transform the 3x8 bits to 4x6 bits, as required by
529 base64. */
5933aab2 530 for (string::const_iterator I = S.begin(); I < S.end(); I += 3)
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531 {
532 char Bits[3] = {0,0,0};
533 Bits[0] = I[0];
5933aab2 534 if (I + 1 < S.end())
6c139d6e 535 Bits[1] = I[1];
5933aab2 536 if (I + 2 < S.end())
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537 Bits[2] = I[2];
538
539 Final += tbl[Bits[0] >> 2];
540 Final += tbl[((Bits[0] & 3) << 4) + (Bits[1] >> 4)];
541
5933aab2 542 if (I + 1 >= S.end())
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543 break;
544
545 Final += tbl[((Bits[1] & 0xf) << 2) + (Bits[2] >> 6)];
546
5933aab2 547 if (I + 2 >= S.end())
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548 break;
549
550 Final += tbl[Bits[2] & 0x3f];
551 }
552
553 /* Apply the padding elements, this tells how many bytes the remote
554 end should discard */
555 if (S.length() % 3 == 2)
556 Final += '=';
557 if (S.length() % 3 == 1)
558 Final += "==";
559
560 return Final;
561}
562 /*}}}*/
0da8987a 563// stringcmp - Arbitrary string compare /*{{{*/
6c139d6e 564// ---------------------------------------------------------------------
7365ff46 565/* This safely compares two non-null terminated strings of arbitrary
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566 length */
567int stringcmp(const char *A,const char *AEnd,const char *B,const char *BEnd)
47db8997
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568{
569 for (; A != AEnd && B != BEnd; A++, B++)
570 if (*A != *B)
571 break;
572
573 if (A == AEnd && B == BEnd)
574 return 0;
575 if (A == AEnd)
576 return 1;
577 if (B == BEnd)
578 return -1;
579 if (*A < *B)
580 return -1;
581 return 1;
582}
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583
584#if __GNUC__ >= 3
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585int stringcmp(string::const_iterator A,string::const_iterator AEnd,
586 const char *B,const char *BEnd)
587{
588 for (; A != AEnd && B != BEnd; A++, B++)
589 if (*A != *B)
590 break;
591
592 if (A == AEnd && B == BEnd)
593 return 0;
594 if (A == AEnd)
595 return 1;
596 if (B == BEnd)
597 return -1;
598 if (*A < *B)
599 return -1;
600 return 1;
601}
602int stringcmp(string::const_iterator A,string::const_iterator AEnd,
603 string::const_iterator B,string::const_iterator BEnd)
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604{
605 for (; A != AEnd && B != BEnd; A++, B++)
606 if (*A != *B)
607 break;
608
609 if (A == AEnd && B == BEnd)
610 return 0;
611 if (A == AEnd)
612 return 1;
613 if (B == BEnd)
614 return -1;
615 if (*A < *B)
616 return -1;
617 return 1;
618}
ae0b19f5 619#endif
6c139d6e 620 /*}}}*/
0da8987a 621// stringcasecmp - Arbitrary case insensitive string compare /*{{{*/
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622// ---------------------------------------------------------------------
623/* */
624int stringcasecmp(const char *A,const char *AEnd,const char *B,const char *BEnd)
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625{
626 for (; A != AEnd && B != BEnd; A++, B++)
6dc60370 627 if (tolower_ascii(*A) != tolower_ascii(*B))
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628 break;
629
630 if (A == AEnd && B == BEnd)
631 return 0;
632 if (A == AEnd)
633 return 1;
634 if (B == BEnd)
635 return -1;
6dc60370 636 if (tolower_ascii(*A) < tolower_ascii(*B))
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637 return -1;
638 return 1;
639}
ae0b19f5 640#if __GNUC__ >= 3
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641int stringcasecmp(string::const_iterator A,string::const_iterator AEnd,
642 const char *B,const char *BEnd)
643{
644 for (; A != AEnd && B != BEnd; A++, B++)
6dc60370 645 if (tolower_ascii(*A) != tolower_ascii(*B))
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646 break;
647
648 if (A == AEnd && B == BEnd)
649 return 0;
650 if (A == AEnd)
651 return 1;
652 if (B == BEnd)
653 return -1;
6dc60370 654 if (tolower_ascii(*A) < tolower_ascii(*B))
47db8997
AL
655 return -1;
656 return 1;
657}
658int stringcasecmp(string::const_iterator A,string::const_iterator AEnd,
659 string::const_iterator B,string::const_iterator BEnd)
6c139d6e
AL
660{
661 for (; A != AEnd && B != BEnd; A++, B++)
6dc60370 662 if (tolower_ascii(*A) != tolower_ascii(*B))
6c139d6e 663 break;
3b5421b4 664
6c139d6e
AL
665 if (A == AEnd && B == BEnd)
666 return 0;
667 if (A == AEnd)
668 return 1;
669 if (B == BEnd)
670 return -1;
6dc60370 671 if (tolower_ascii(*A) < tolower_ascii(*B))
6c139d6e
AL
672 return -1;
673 return 1;
674}
ae0b19f5 675#endif
6c139d6e 676 /*}}}*/
3b5421b4
AL
677// LookupTag - Lookup the value of a tag in a taged string /*{{{*/
678// ---------------------------------------------------------------------
679/* The format is like those used in package files and the method
680 communication system */
171c75f1 681string LookupTag(const string &Message,const char *Tag,const char *Default)
3b5421b4
AL
682{
683 // Look for a matching tag.
684 int Length = strlen(Tag);
f7f0d6c7 685 for (string::const_iterator I = Message.begin(); I + Length < Message.end(); ++I)
3b5421b4
AL
686 {
687 // Found the tag
688 if (I[Length] == ':' && stringcasecmp(I,I+Length,Tag) == 0)
689 {
690 // Find the end of line and strip the leading/trailing spaces
171c75f1 691 string::const_iterator J;
3b5421b4 692 I += Length + 1;
f7f0d6c7
DK
693 for (; isspace(*I) != 0 && I < Message.end(); ++I);
694 for (J = I; *J != '\n' && J < Message.end(); ++J);
695 for (; J > I && isspace(J[-1]) != 0; --J);
3b5421b4 696
0db4a45b 697 return string(I,J);
3b5421b4
AL
698 }
699
f7f0d6c7 700 for (; *I != '\n' && I < Message.end(); ++I);
3b5421b4
AL
701 }
702
703 // Failed to find a match
704 if (Default == 0)
705 return string();
706 return Default;
707}
708 /*}}}*/
709// StringToBool - Converts a string into a boolean /*{{{*/
710// ---------------------------------------------------------------------
711/* This inspects the string to see if it is true or if it is false and
712 then returns the result. Several varients on true/false are checked. */
171c75f1 713int StringToBool(const string &Text,int Default)
3b5421b4 714{
08be0ca3
MV
715 char *ParseEnd;
716 int Res = strtol(Text.c_str(),&ParseEnd,0);
717 // ensure that the entire string was converted by strtol to avoid
718 // failures on "apt-cache show -a 0ad" where the "0" is converted
719 const char *TextEnd = Text.c_str()+Text.size();
720 if (ParseEnd == TextEnd && Res >= 0 && Res <= 1)
3b5421b4
AL
721 return Res;
722
723 // Check for positives
724 if (strcasecmp(Text.c_str(),"no") == 0 ||
725 strcasecmp(Text.c_str(),"false") == 0 ||
726 strcasecmp(Text.c_str(),"without") == 0 ||
7f25bdff 727 strcasecmp(Text.c_str(),"off") == 0 ||
3b5421b4
AL
728 strcasecmp(Text.c_str(),"disable") == 0)
729 return 0;
730
731 // Check for negatives
732 if (strcasecmp(Text.c_str(),"yes") == 0 ||
733 strcasecmp(Text.c_str(),"true") == 0 ||
734 strcasecmp(Text.c_str(),"with") == 0 ||
7f25bdff 735 strcasecmp(Text.c_str(),"on") == 0 ||
3b5421b4
AL
736 strcasecmp(Text.c_str(),"enable") == 0)
737 return 1;
738
739 return Default;
740}
741 /*}}}*/
0a8a80e5
AL
742// TimeRFC1123 - Convert a time_t into RFC1123 format /*{{{*/
743// ---------------------------------------------------------------------
744/* This converts a time_t into a string time representation that is
745 year 2000 complient and timezone neutral */
746string TimeRFC1123(time_t Date)
747{
410327e1
DK
748 struct tm Conv;
749 if (gmtime_r(&Date, &Conv) == NULL)
750 return "";
0a8a80e5 751
410327e1 752 char Buf[300];
0a8a80e5
AL
753 const char *Day[] = {"Sun","Mon","Tue","Wed","Thu","Fri","Sat"};
754 const char *Month[] = {"Jan","Feb","Mar","Apr","May","Jun","Jul",
755 "Aug","Sep","Oct","Nov","Dec"};
756
8ff84cf3 757 snprintf(Buf, sizeof(Buf), "%s, %02i %s %i %02i:%02i:%02i GMT",Day[Conv.tm_wday],
0a8a80e5
AL
758 Conv.tm_mday,Month[Conv.tm_mon],Conv.tm_year+1900,Conv.tm_hour,
759 Conv.tm_min,Conv.tm_sec);
760 return Buf;
761}
762 /*}}}*/
763// ReadMessages - Read messages from the FD /*{{{*/
764// ---------------------------------------------------------------------
765/* This pulls full messages from the input FD into the message buffer.
766 It assumes that messages will not pause during transit so no
ffc36991
DB
767 fancy buffering is used.
768
769 In particular: this reads blocks from the input until it believes
770 that it's run out of input text. Each block is terminated by a
d8c71b3b 771 double newline ('\n' followed by '\n').
ffc36991 772 */
0a8a80e5
AL
773bool ReadMessages(int Fd, vector<string> &List)
774{
aee70518 775 char Buffer[64000];
ffc36991
DB
776 // Represents any left-over from the previous iteration of the
777 // parse loop. (i.e., if a message is split across the end
778 // of the buffer, it goes here)
779 string PartialMessage;
d8c71b3b
DK
780
781 do {
782 int const Res = read(Fd, Buffer, sizeof(Buffer));
b0db36b1
AL
783 if (Res < 0 && errno == EINTR)
784 continue;
d8c71b3b
DK
785
786 // process we read from has died
0a8a80e5
AL
787 if (Res == 0)
788 return false;
d8c71b3b 789
0a8a80e5 790 // No data
d8c71b3b 791 if (Res < 0 && (errno == EAGAIN || errno == EWOULDBLOCK))
0a8a80e5 792 return true;
b2e465d6
AL
793 if (Res < 0)
794 return false;
d8c71b3b
DK
795
796 // extract the message(s) from the buffer
797 char const *Start = Buffer;
798 char const * const End = Buffer + Res;
799
800 char const * NL = (char const *) memchr(Start, '\n', End - Start);
801 if (NL == NULL)
0a8a80e5 802 {
d8c71b3b
DK
803 // end of buffer: store what we have so far and read new data in
804 PartialMessage.append(Start, End - Start);
805 Start = End;
0a8a80e5 806 }
ffc36991 807 else
d8c71b3b
DK
808 ++NL;
809
810 if (PartialMessage.empty() == false && Start < End)
811 {
812 // if we start with a new line, see if the partial message we have ended with one
813 // so that we properly detect records ending between two read() runs
814 // cases are: \n|\n , \r\n|\r\n and \r\n\r|\n
815 // the case \r|\n\r\n is handled by the usual double-newline handling
816 if ((NL - Start) == 1 || ((NL - Start) == 2 && *Start == '\r'))
817 {
818 if (APT::String::Endswith(PartialMessage, "\n") || APT::String::Endswith(PartialMessage, "\r\n\r"))
819 {
820 PartialMessage.erase(PartialMessage.find_last_not_of("\r\n") + 1);
821 List.push_back(PartialMessage);
822 PartialMessage.clear();
823 while (NL < End && (*NL == '\n' || *NL == '\r')) ++NL;
824 Start = NL;
825 }
826 }
827 }
828
829 while (Start < End) {
830 char const * NL2 = (char const *) memchr(NL, '\n', End - NL);
831 if (NL2 == NULL)
832 {
833 // end of buffer: store what we have so far and read new data in
834 PartialMessage.append(Start, End - Start);
835 break;
836 }
837 ++NL2;
838
839 // did we find a double newline?
840 if ((NL2 - NL) == 1 || ((NL2 - NL) == 2 && *NL == '\r'))
841 {
842 PartialMessage.append(Start, NL2 - Start);
843 PartialMessage.erase(PartialMessage.find_last_not_of("\r\n") + 1);
844 List.push_back(PartialMessage);
845 PartialMessage.clear();
846 while (NL2 < End && (*NL2 == '\n' || *NL2 == '\r')) ++NL2;
847 Start = NL2;
848 }
849 NL = NL2;
850 }
851
852 // we have read at least one complete message and nothing left
853 if (PartialMessage.empty() == true)
854 return true;
0a8a80e5
AL
855
856 if (WaitFd(Fd) == false)
857 return false;
d8c71b3b 858 } while (true);
0a8a80e5
AL
859}
860 /*}}}*/
24231681
AL
861// MonthConv - Converts a month string into a number /*{{{*/
862// ---------------------------------------------------------------------
863/* This was lifted from the boa webserver which lifted it from 'wn-v1.07'
6dc60370 864 Made it a bit more robust with a few tolower_ascii though. */
24231681
AL
865static int MonthConv(char *Month)
866{
6dc60370 867 switch (tolower_ascii(*Month))
24231681 868 {
6dc60370
DK
869 case 'a':
870 return tolower_ascii(Month[1]) == 'p'?3:7;
871 case 'd':
24231681 872 return 11;
6dc60370 873 case 'f':
24231681 874 return 1;
6dc60370
DK
875 case 'j':
876 if (tolower_ascii(Month[1]) == 'a')
24231681 877 return 0;
6dc60370
DK
878 return tolower_ascii(Month[2]) == 'n'?5:6;
879 case 'm':
880 return tolower_ascii(Month[2]) == 'r'?2:4;
881 case 'n':
24231681 882 return 10;
6dc60370 883 case 'o':
24231681 884 return 9;
6dc60370 885 case 's':
24231681
AL
886 return 8;
887
888 // Pretend it is January..
889 default:
890 return 0;
891 }
892}
893 /*}}}*/
55089145 894// timegm - Internal timegm if the gnu version is not available /*{{{*/
6d5dd02a 895// ---------------------------------------------------------------------
55089145 896/* Converts struct tm to time_t, assuming the data in tm is UTC rather
6d5dd02a 897 than local timezone (mktime assumes the latter).
41b6caf4 898
55089145
DK
899 This function is a nonstandard GNU extension that is also present on
900 the BSDs and maybe other systems. For others we follow the advice of
901 the manpage of timegm and use his portable replacement. */
902#ifndef HAVE_TIMEGM
6d5dd02a
AL
903static time_t timegm(struct tm *t)
904{
55089145
DK
905 char *tz = getenv("TZ");
906 setenv("TZ", "", 1);
907 tzset();
908 time_t ret = mktime(t);
909 if (tz)
910 setenv("TZ", tz, 1);
911 else
912 unsetenv("TZ");
913 tzset();
914 return ret;
6d5dd02a
AL
915}
916#endif
917 /*}}}*/
cd8cf88f
DK
918// FullDateToTime - Converts a HTTP1.1 full date strings into a time_t /*{{{*/
919// ---------------------------------------------------------------------
920/* tries to parses a full date as specified in RFC2616 Section 3.3.1
921 with one exception: All timezones (%Z) are accepted but the protocol
922 says that it MUST be GMT, but this one is equal to UTC which we will
923 encounter from time to time (e.g. in Release files) so we accept all
924 here and just assume it is GMT (or UTC) later on */
925bool RFC1123StrToTime(const char* const str,time_t &time)
926{
927 struct tm Tm;
24d7b626
DK
928 setlocale (LC_ALL,"C");
929 bool const invalid =
cd8cf88f 930 // Sun, 06 Nov 1994 08:49:37 GMT ; RFC 822, updated by RFC 1123
24d7b626 931 (strptime(str, "%a, %d %b %Y %H:%M:%S %Z", &Tm) == NULL &&
cd8cf88f
DK
932 // Sunday, 06-Nov-94 08:49:37 GMT ; RFC 850, obsoleted by RFC 1036
933 strptime(str, "%A, %d-%b-%y %H:%M:%S %Z", &Tm) == NULL &&
934 // Sun Nov 6 08:49:37 1994 ; ANSI C's asctime() format
24d7b626
DK
935 strptime(str, "%a %b %d %H:%M:%S %Y", &Tm) == NULL);
936 setlocale (LC_ALL,"");
937 if (invalid == true)
cd8cf88f
DK
938 return false;
939
940 time = timegm(&Tm);
941 return true;
942}
943 /*}}}*/
944// FTPMDTMStrToTime - Converts a ftp modification date into a time_t /*{{{*/
945// ---------------------------------------------------------------------
946/* */
947bool FTPMDTMStrToTime(const char* const str,time_t &time)
948{
949 struct tm Tm;
950 // MDTM includes no whitespaces but recommend and ignored by strptime
951 if (strptime(str, "%Y %m %d %H %M %S", &Tm) == NULL)
952 return false;
953
954 time = timegm(&Tm);
955 return true;
956}
957 /*}}}*/
24231681
AL
958// StrToTime - Converts a string into a time_t /*{{{*/
959// ---------------------------------------------------------------------
1e3f4083 960/* This handles all 3 popular time formats including RFC 1123, RFC 1036
24231681
AL
961 and the C library asctime format. It requires the GNU library function
962 'timegm' to convert a struct tm in UTC to a time_t. For some bizzar
f58a97d3
AL
963 reason the C library does not provide any such function :< This also
964 handles the weird, but unambiguous FTP time format*/
171c75f1 965bool StrToTime(const string &Val,time_t &Result)
24231681
AL
966{
967 struct tm Tm;
968 char Month[10];
404528bd 969
24231681 970 // Skip the day of the week
404528bd
DK
971 const char *I = strchr(Val.c_str(), ' ');
972
24231681 973 // Handle RFC 1123 time
f58a97d3 974 Month[0] = 0;
324cbd56 975 if (sscanf(I," %2d %3s %4d %2d:%2d:%2d GMT",&Tm.tm_mday,Month,&Tm.tm_year,
24231681
AL
976 &Tm.tm_hour,&Tm.tm_min,&Tm.tm_sec) != 6)
977 {
978 // Handle RFC 1036 time
324cbd56 979 if (sscanf(I," %2d-%3s-%3d %2d:%2d:%2d GMT",&Tm.tm_mday,Month,
24231681
AL
980 &Tm.tm_year,&Tm.tm_hour,&Tm.tm_min,&Tm.tm_sec) == 6)
981 Tm.tm_year += 1900;
982 else
983 {
984 // asctime format
324cbd56 985 if (sscanf(I," %3s %2d %2d:%2d:%2d %4d",Month,&Tm.tm_mday,
24231681 986 &Tm.tm_hour,&Tm.tm_min,&Tm.tm_sec,&Tm.tm_year) != 6)
f58a97d3
AL
987 {
988 // 'ftp' time
7ef72446 989 if (sscanf(Val.c_str(),"%4d%2d%2d%2d%2d%2d",&Tm.tm_year,&Tm.tm_mon,
f58a97d3
AL
990 &Tm.tm_mday,&Tm.tm_hour,&Tm.tm_min,&Tm.tm_sec) != 6)
991 return false;
992 Tm.tm_mon--;
993 }
24231681
AL
994 }
995 }
996
997 Tm.tm_isdst = 0;
f58a97d3
AL
998 if (Month[0] != 0)
999 Tm.tm_mon = MonthConv(Month);
70e0c168
MV
1000 else
1001 Tm.tm_mon = 0; // we don't have a month, so pick something
24231681
AL
1002 Tm.tm_year -= 1900;
1003
1004 // Convert to local time and then to GMT
1005 Result = timegm(&Tm);
1006 return true;
1007}
1008 /*}}}*/
ddc1d8d0
AL
1009// StrToNum - Convert a fixed length string to a number /*{{{*/
1010// ---------------------------------------------------------------------
1011/* This is used in decoding the crazy fixed length string headers in
1012 tar and ar files. */
1013bool StrToNum(const char *Str,unsigned long &Res,unsigned Len,unsigned Base)
1014{
1015 char S[30];
1016 if (Len >= sizeof(S))
1017 return false;
1018 memcpy(S,Str,Len);
1019 S[Len] = 0;
1020
1021 // All spaces is a zero
1022 Res = 0;
1023 unsigned I;
1024 for (I = 0; S[I] == ' '; I++);
1025 if (S[I] == 0)
1026 return true;
1027
1028 char *End;
1029 Res = strtoul(S,&End,Base);
1030 if (End == S)
1031 return false;
1032
1033 return true;
1034}
1035 /*}}}*/
650faab0
DK
1036// StrToNum - Convert a fixed length string to a number /*{{{*/
1037// ---------------------------------------------------------------------
1038/* This is used in decoding the crazy fixed length string headers in
1039 tar and ar files. */
1040bool StrToNum(const char *Str,unsigned long long &Res,unsigned Len,unsigned Base)
1041{
1042 char S[30];
1043 if (Len >= sizeof(S))
1044 return false;
1045 memcpy(S,Str,Len);
1046 S[Len] = 0;
1047
1048 // All spaces is a zero
1049 Res = 0;
1050 unsigned I;
1051 for (I = 0; S[I] == ' '; I++);
1052 if (S[I] == 0)
1053 return true;
1054
1055 char *End;
1056 Res = strtoull(S,&End,Base);
1057 if (End == S)
1058 return false;
1059
1060 return true;
1061}
1062 /*}}}*/
1063
54f2f0a3
NH
1064// Base256ToNum - Convert a fixed length binary to a number /*{{{*/
1065// ---------------------------------------------------------------------
1066/* This is used in decoding the 256bit encoded fixed length fields in
1067 tar files */
3c09d634 1068bool Base256ToNum(const char *Str,unsigned long long &Res,unsigned int Len)
54f2f0a3 1069{
54f2f0a3
NH
1070 if ((Str[0] & 0x80) == 0)
1071 return false;
1072 else
1073 {
1074 Res = Str[0] & 0x7F;
f688d1d3 1075 for(unsigned int i = 1; i < Len; ++i)
54f2f0a3
NH
1076 Res = (Res<<8) + Str[i];
1077 return true;
1078 }
1079}
1080 /*}}}*/
3c09d634
GJ
1081// Base256ToNum - Convert a fixed length binary to a number /*{{{*/
1082// ---------------------------------------------------------------------
1083/* This is used in decoding the 256bit encoded fixed length fields in
1084 tar files */
1085bool Base256ToNum(const char *Str,unsigned long &Res,unsigned int Len)
1086{
1087 unsigned long long Num;
1088 bool rc;
1089
1090 rc = Base256ToNum(Str, Num, Len);
1091 Res = Num;
1092 if (Res != Num)
1093 return false;
1094
1095 return rc;
1096}
1097 /*}}}*/
6e52073f
AL
1098// HexDigit - Convert a hex character into an integer /*{{{*/
1099// ---------------------------------------------------------------------
1100/* Helper for Hex2Num */
1101static int HexDigit(int c)
1102{
1103 if (c >= '0' && c <= '9')
1104 return c - '0';
1105 if (c >= 'a' && c <= 'f')
1106 return c - 'a' + 10;
1107 if (c >= 'A' && c <= 'F')
1108 return c - 'A' + 10;
1109 return 0;
1110}
1111 /*}}}*/
1112// Hex2Num - Convert a long hex number into a buffer /*{{{*/
1113// ---------------------------------------------------------------------
1114/* The length of the buffer must be exactly 1/2 the length of the string. */
171c75f1 1115bool Hex2Num(const string &Str,unsigned char *Num,unsigned int Length)
6e52073f 1116{
0db4a45b 1117 if (Str.length() != Length*2)
6e52073f
AL
1118 return false;
1119
1120 // Convert each digit. We store it in the same order as the string
1121 int J = 0;
0db4a45b 1122 for (string::const_iterator I = Str.begin(); I != Str.end();J++, I += 2)
6e52073f
AL
1123 {
1124 if (isxdigit(*I) == 0 || isxdigit(I[1]) == 0)
1125 return false;
1126
1127 Num[J] = HexDigit(I[0]) << 4;
1128 Num[J] += HexDigit(I[1]);
1129 }
1130
1131 return true;
1132}
1133 /*}}}*/
b2e465d6
AL
1134// TokSplitString - Split a string up by a given token /*{{{*/
1135// ---------------------------------------------------------------------
1136/* This is intended to be a faster splitter, it does not use dynamic
1137 memories. Input is changed to insert nulls at each token location. */
1138bool TokSplitString(char Tok,char *Input,char **List,
1139 unsigned long ListMax)
1140{
1141 // Strip any leading spaces
1142 char *Start = Input;
1143 char *Stop = Start + strlen(Start);
1144 for (; *Start != 0 && isspace(*Start) != 0; Start++);
1145
1146 unsigned long Count = 0;
1147 char *Pos = Start;
1148 while (Pos != Stop)
1149 {
1150 // Skip to the next Token
1151 for (; Pos != Stop && *Pos != Tok; Pos++);
1152
1153 // Back remove spaces
1154 char *End = Pos;
1155 for (; End > Start && (End[-1] == Tok || isspace(End[-1]) != 0); End--);
1156 *End = 0;
1157
1158 List[Count++] = Start;
1159 if (Count >= ListMax)
1160 {
1161 List[Count-1] = 0;
1162 return false;
1163 }
1164
1165 // Advance pos
1166 for (; Pos != Stop && (*Pos == Tok || isspace(*Pos) != 0 || *Pos == 0); Pos++);
1167 Start = Pos;
1168 }
1169
1170 List[Count] = 0;
1171 return true;
1172}
1173 /*}}}*/
3f42500d 1174// VectorizeString - Split a string up into a vector of strings /*{{{*/
d7cf5923
DK
1175// ---------------------------------------------------------------------
1176/* This can be used to split a given string up into a vector, so the
1177 propose is the same as in the method above and this one is a bit slower
3f42500d
DK
1178 also, but the advantage is that we have an iteratable vector */
1179vector<string> VectorizeString(string const &haystack, char const &split)
d7cf5923 1180{
a5414e56
DK
1181 vector<string> exploded;
1182 if (haystack.empty() == true)
1183 return exploded;
d7cf5923
DK
1184 string::const_iterator start = haystack.begin();
1185 string::const_iterator end = start;
d7cf5923
DK
1186 do {
1187 for (; end != haystack.end() && *end != split; ++end);
1188 exploded.push_back(string(start, end));
1189 start = end + 1;
1190 } while (end != haystack.end() && (++end) != haystack.end());
1191 return exploded;
1192}
1193 /*}}}*/
9572a54b 1194// StringSplit - split a string into a string vector by token /*{{{*/
00f4d9ff 1195// ---------------------------------------------------------------------
41053d72 1196/* See header for details.
00f4d9ff 1197 */
41053d72 1198vector<string> StringSplit(std::string const &s, std::string const &sep,
85bf0019 1199 unsigned int maxsplit)
00f4d9ff
MV
1200{
1201 vector<string> split;
1202 size_t start, pos;
85bf0019 1203
9572a54b 1204 // no seperator given, this is bogus
00f4d9ff
MV
1205 if(sep.size() == 0)
1206 return split;
85bf0019
MV
1207
1208 start = pos = 0;
9572a54b
MV
1209 while (pos != string::npos)
1210 {
00f4d9ff
MV
1211 pos = s.find(sep, start);
1212 split.push_back(s.substr(start, pos-start));
85bf0019 1213
9572a54b 1214 // if maxsplit is reached, the remaining string is the last item
2ddab3fb 1215 if(split.size() >= maxsplit)
85bf0019
MV
1216 {
1217 split[split.size()-1] = s.substr(start);
1218 break;
1219 }
1220 start = pos+sep.size();
9572a54b 1221 }
00f4d9ff
MV
1222 return split;
1223}
1224 /*}}}*/
b2e465d6
AL
1225// RegexChoice - Simple regex list/list matcher /*{{{*/
1226// ---------------------------------------------------------------------
1227/* */
1228unsigned long RegexChoice(RxChoiceList *Rxs,const char **ListBegin,
1229 const char **ListEnd)
1230{
1231 for (RxChoiceList *R = Rxs; R->Str != 0; R++)
1232 R->Hit = false;
1233
1234 unsigned long Hits = 0;
ef74268b 1235 for (; ListBegin < ListEnd; ++ListBegin)
b2e465d6
AL
1236 {
1237 // Check if the name is a regex
1238 const char *I;
1239 bool Regex = true;
1240 for (I = *ListBegin; *I != 0; I++)
1241 if (*I == '.' || *I == '?' || *I == '*' || *I == '|')
1242 break;
1243 if (*I == 0)
1244 Regex = false;
1245
1246 // Compile the regex pattern
1247 regex_t Pattern;
1248 if (Regex == true)
1249 if (regcomp(&Pattern,*ListBegin,REG_EXTENDED | REG_ICASE |
1250 REG_NOSUB) != 0)
1251 Regex = false;
1252
1253 // Search the list
1254 bool Done = false;
1255 for (RxChoiceList *R = Rxs; R->Str != 0; R++)
1256 {
1257 if (R->Str[0] == 0)
1258 continue;
1259
1260 if (strcasecmp(R->Str,*ListBegin) != 0)
1261 {
1262 if (Regex == false)
1263 continue;
1264 if (regexec(&Pattern,R->Str,0,0,0) != 0)
1265 continue;
1266 }
1267 Done = true;
1268
1269 if (R->Hit == false)
1270 Hits++;
1271
1272 R->Hit = true;
1273 }
1274
1275 if (Regex == true)
1276 regfree(&Pattern);
1277
1278 if (Done == false)
1279 _error->Warning(_("Selection %s not found"),*ListBegin);
1280 }
1281
1282 return Hits;
1283}
1284 /*}}}*/
5076b3c2 1285// {str,io}printf - C format string outputter to C++ strings/iostreams /*{{{*/
b2e465d6 1286// ---------------------------------------------------------------------
1168596f
AL
1287/* This is used to make the internationalization strings easier to translate
1288 and to allow reordering of parameters */
5076b3c2
DK
1289static bool iovprintf(ostream &out, const char *format,
1290 va_list &args, ssize_t &size) {
1291 char *S = (char*)malloc(size);
1292 ssize_t const n = vsnprintf(S, size, format, args);
1293 if (n > -1 && n < size) {
1294 out << S;
1295 free(S);
1296 return true;
1297 } else {
1298 if (n > -1)
1299 size = n + 1;
1300 else
1301 size *= 2;
1302 }
1303 free(S);
1304 return false;
1305}
1306void ioprintf(ostream &out,const char *format,...)
b2e465d6
AL
1307{
1308 va_list args;
5076b3c2
DK
1309 ssize_t size = 400;
1310 while (true) {
e8afd168 1311 bool ret;
5076b3c2 1312 va_start(args,format);
ce105e87 1313 ret = iovprintf(out, format, args, size);
5076b3c2 1314 va_end(args);
ce105e87
DK
1315 if (ret == true)
1316 return;
5076b3c2 1317 }
1168596f 1318}
5076b3c2 1319void strprintf(string &out,const char *format,...)
d4cd303e
MV
1320{
1321 va_list args;
5076b3c2
DK
1322 ssize_t size = 400;
1323 std::ostringstream outstr;
1324 while (true) {
e8afd168 1325 bool ret;
5076b3c2 1326 va_start(args,format);
ce105e87 1327 ret = iovprintf(outstr, format, args, size);
5076b3c2 1328 va_end(args);
ce105e87
DK
1329 if (ret == true)
1330 break;
5076b3c2
DK
1331 }
1332 out = outstr.str();
d4cd303e
MV
1333}
1334 /*}}}*/
1168596f
AL
1335// safe_snprintf - Safer snprintf /*{{{*/
1336// ---------------------------------------------------------------------
1337/* This is a snprintf that will never (ever) go past 'End' and returns a
1338 pointer to the end of the new string. The returned string is always null
1339 terminated unless Buffer == end. This is a better alterantive to using
1340 consecutive snprintfs. */
1341char *safe_snprintf(char *Buffer,char *End,const char *Format,...)
1342{
1343 va_list args;
ea6db08d 1344 int Did;
1168596f 1345
1168596f
AL
1346 if (End <= Buffer)
1347 return End;
163dc55b 1348 va_start(args,Format);
1168596f 1349 Did = vsnprintf(Buffer,End - Buffer,Format,args);
163dc55b
MV
1350 va_end(args);
1351
1168596f
AL
1352 if (Did < 0 || Buffer + Did > End)
1353 return End;
1354 return Buffer + Did;
b2e465d6
AL
1355}
1356 /*}}}*/
cdb9307c
MV
1357// StripEpoch - Remove the version "epoch" from a version string /*{{{*/
1358// ---------------------------------------------------------------------
1359string StripEpoch(const string &VerStr)
1360{
1361 size_t i = VerStr.find(":");
1362 if (i == string::npos)
1363 return VerStr;
1364 return VerStr.substr(i+1);
1365}
69c2ecbd 1366 /*}}}*/
4e86942a
MV
1367// tolower_ascii - tolower() function that ignores the locale /*{{{*/
1368// ---------------------------------------------------------------------
6dc60370 1369/* This little function is the most called method we have and tries
1e3f4083 1370 therefore to do the absolut minimum - and is notable faster than
6dc60370
DK
1371 standard tolower/toupper and as a bonus avoids problems with different
1372 locales - we only operate on ascii chars anyway. */
1373int tolower_ascii(int const c)
4e86942a 1374{
6dc60370 1375 if (c >= 'A' && c <= 'Z')
4e86942a
MV
1376 return c + 32;
1377 return c;
1378}
1379 /*}}}*/
1380
1e3f4083 1381// CheckDomainList - See if Host is in a , separate list /*{{{*/
f8081133 1382// ---------------------------------------------------------------------
1e3f4083 1383/* The domain list is a comma separate list of domains that are suffix
f8081133 1384 matched against the argument */
171c75f1 1385bool CheckDomainList(const string &Host,const string &List)
f8081133 1386{
47db8997 1387 string::const_iterator Start = List.begin();
f7f0d6c7 1388 for (string::const_iterator Cur = List.begin(); Cur <= List.end(); ++Cur)
f8081133 1389 {
47db8997 1390 if (Cur < List.end() && *Cur != ',')
f8081133
AL
1391 continue;
1392
1393 // Match the end of the string..
e2c7e6b5 1394 if ((Host.size() >= (unsigned)(Cur - Start)) &&
f8081133 1395 Cur - Start != 0 &&
47db8997 1396 stringcasecmp(Host.end() - (Cur - Start),Host.end(),Start,Cur) == 0)
f8081133
AL
1397 return true;
1398
1399 Start = Cur + 1;
1400 }
1401 return false;
1402}
1403 /*}}}*/
b9179170
MV
1404// strv_length - Return the length of a NULL-terminated string array /*{{{*/
1405// ---------------------------------------------------------------------
1406/* */
1407size_t strv_length(const char **str_array)
1408{
1409 size_t i;
1410 for (i=0; str_array[i] != NULL; i++)
1411 /* nothing */
1412 ;
1413 return i;
1414}
b8eba208 1415 /*}}}*/
69c2ecbd 1416// DeEscapeString - unescape (\0XX and \xXX) from a string /*{{{*/
a513ace2 1417// ---------------------------------------------------------------------
cca2efe6
MV
1418/* */
1419string DeEscapeString(const string &input)
a513ace2 1420{
b9dc4706 1421 char tmp[3];
69c2ecbd
DK
1422 string::const_iterator it;
1423 string output;
f7f0d6c7 1424 for (it = input.begin(); it != input.end(); ++it)
a513ace2
MV
1425 {
1426 // just copy non-escape chars
1427 if (*it != '\\')
1428 {
1429 output += *it;
1430 continue;
1431 }
f8081133 1432
a513ace2
MV
1433 // deal with double escape
1434 if (*it == '\\' &&
1435 (it + 1 < input.end()) && it[1] == '\\')
1436 {
1437 // copy
1438 output += *it;
1439 // advance iterator one step further
f7f0d6c7 1440 ++it;
a513ace2
MV
1441 continue;
1442 }
1443
1444 // ensure we have a char to read
1445 if (it + 1 == input.end())
1446 continue;
f8081133 1447
a513ace2 1448 // read it
f7f0d6c7 1449 ++it;
a513ace2
MV
1450 switch (*it)
1451 {
1452 case '0':
b9dc4706 1453 if (it + 2 <= input.end()) {
a513ace2
MV
1454 tmp[0] = it[1];
1455 tmp[1] = it[2];
b9dc4706 1456 tmp[2] = 0;
a513ace2
MV
1457 output += (char)strtol(tmp, 0, 8);
1458 it += 2;
1459 }
1460 break;
1461 case 'x':
1462 if (it + 2 <= input.end()) {
1463 tmp[0] = it[1];
1464 tmp[1] = it[2];
1465 tmp[2] = 0;
1466 output += (char)strtol(tmp, 0, 16);
1467 it += 2;
1468 }
1469 break;
1470 default:
1471 // FIXME: raise exception here?
a513ace2
MV
1472 break;
1473 }
1474 }
1475 return output;
1476}
1477 /*}}}*/
be4401bf 1478// URI::CopyFrom - Copy from an object /*{{{*/
93bf083d
AL
1479// ---------------------------------------------------------------------
1480/* This parses the URI into all of its components */
171c75f1 1481void URI::CopyFrom(const string &U)
93bf083d 1482{
5933aab2 1483 string::const_iterator I = U.begin();
93bf083d 1484
b2e465d6 1485 // Locate the first colon, this separates the scheme
f7f0d6c7 1486 for (; I < U.end() && *I != ':' ; ++I);
5933aab2 1487 string::const_iterator FirstColon = I;
93bf083d 1488
bfd22fc0
AL
1489 /* Determine if this is a host type URI with a leading double //
1490 and then search for the first single / */
5933aab2
AL
1491 string::const_iterator SingleSlash = I;
1492 if (I + 3 < U.end() && I[1] == '/' && I[2] == '/')
bfd22fc0 1493 SingleSlash += 3;
67ff87bf
AL
1494
1495 /* Find the / indicating the end of the hostname, ignoring /'s in the
1496 square brackets */
1497 bool InBracket = false;
f7f0d6c7 1498 for (; SingleSlash < U.end() && (*SingleSlash != '/' || InBracket == true); ++SingleSlash)
67ff87bf
AL
1499 {
1500 if (*SingleSlash == '[')
1501 InBracket = true;
1502 if (InBracket == true && *SingleSlash == ']')
1503 InBracket = false;
1504 }
1505
5933aab2
AL
1506 if (SingleSlash > U.end())
1507 SingleSlash = U.end();
93bf083d
AL
1508
1509 // We can now write the access and path specifiers
171c75f1 1510 Access.assign(U.begin(),FirstColon);
5933aab2 1511 if (SingleSlash != U.end())
171c75f1 1512 Path.assign(SingleSlash,U.end());
92e889c8
AL
1513 if (Path.empty() == true)
1514 Path = "/";
1515
93bf083d 1516 // Now we attempt to locate a user:pass@host fragment
d48c6a7d 1517 if (FirstColon + 2 <= U.end() && FirstColon[1] == '/' && FirstColon[2] == '/')
f46e7681
AL
1518 FirstColon += 3;
1519 else
1520 FirstColon += 1;
5933aab2 1521 if (FirstColon >= U.end())
93bf083d
AL
1522 return;
1523
1524 if (FirstColon > SingleSlash)
1525 FirstColon = SingleSlash;
1526
3856756b
AL
1527 // Find the colon...
1528 I = FirstColon + 1;
1d38d0e9
AL
1529 if (I > SingleSlash)
1530 I = SingleSlash;
f7f0d6c7 1531 for (; I < SingleSlash && *I != ':'; ++I);
5933aab2 1532 string::const_iterator SecondColon = I;
3856756b
AL
1533
1534 // Search for the @ after the colon
f7f0d6c7 1535 for (; I < SingleSlash && *I != '@'; ++I);
5933aab2 1536 string::const_iterator At = I;
93bf083d 1537
93bf083d
AL
1538 // Now write the host and user/pass
1539 if (At == SingleSlash)
1540 {
1541 if (FirstColon < SingleSlash)
171c75f1 1542 Host.assign(FirstColon,SingleSlash);
93bf083d
AL
1543 }
1544 else
1545 {
171c75f1 1546 Host.assign(At+1,SingleSlash);
436d7eab
DK
1547 // username and password must be encoded (RFC 3986)
1548 User.assign(DeQuoteString(FirstColon,SecondColon));
93bf083d 1549 if (SecondColon < At)
436d7eab 1550 Password.assign(DeQuoteString(SecondColon+1,At));
93bf083d
AL
1551 }
1552
67ff87bf
AL
1553 // Now we parse the RFC 2732 [] hostnames.
1554 unsigned long PortEnd = 0;
1555 InBracket = false;
1556 for (unsigned I = 0; I != Host.length();)
1557 {
1558 if (Host[I] == '[')
1559 {
1560 InBracket = true;
1561 Host.erase(I,1);
1562 continue;
1563 }
1564
1565 if (InBracket == true && Host[I] == ']')
1566 {
1567 InBracket = false;
1568 Host.erase(I,1);
1569 PortEnd = I;
1570 continue;
1571 }
1572 I++;
1573 }
1574
1575 // Tsk, weird.
1576 if (InBracket == true)
1577 {
171c75f1 1578 Host.clear();
67ff87bf
AL
1579 return;
1580 }
1581
1d38d0e9 1582 // Now we parse off a port number from the hostname
93bf083d
AL
1583 Port = 0;
1584 string::size_type Pos = Host.rfind(':');
67ff87bf 1585 if (Pos == string::npos || Pos < PortEnd)
93bf083d
AL
1586 return;
1587
1588 Port = atoi(string(Host,Pos+1).c_str());
171c75f1 1589 Host.assign(Host,0,Pos);
93bf083d
AL
1590}
1591 /*}}}*/
1592// URI::operator string - Convert the URI to a string /*{{{*/
1593// ---------------------------------------------------------------------
1594/* */
1595URI::operator string()
1596{
b8eba208
DK
1597 std::stringstream Res;
1598
54cf15cb 1599 if (Access.empty() == false)
b8eba208
DK
1600 Res << Access << ':';
1601
93bf083d 1602 if (Host.empty() == false)
b8eba208 1603 {
54cf15cb 1604 if (Access.empty() == false)
b8eba208
DK
1605 Res << "//";
1606
93bf083d
AL
1607 if (User.empty() == false)
1608 {
5b63d2a9
MV
1609 // FIXME: Technically userinfo is permitted even less
1610 // characters than these, but this is not conveniently
1611 // expressed with a blacklist.
b8eba208 1612 Res << QuoteString(User, ":/?#[]@");
93bf083d 1613 if (Password.empty() == false)
b8eba208
DK
1614 Res << ":" << QuoteString(Password, ":/?#[]@");
1615 Res << "@";
93bf083d 1616 }
b8eba208 1617
7834cb57 1618 // Add RFC 2732 escaping characters
b8eba208
DK
1619 if (Access.empty() == false && Host.find_first_of("/:") != string::npos)
1620 Res << '[' << Host << ']';
7834cb57 1621 else
b8eba208
DK
1622 Res << Host;
1623
492f957a 1624 if (Port != 0)
b8eba208 1625 Res << ':' << Port;
93bf083d 1626 }
b8eba208 1627
93bf083d 1628 if (Path.empty() == false)
492f957a
AL
1629 {
1630 if (Path[0] != '/')
b8eba208 1631 Res << "/" << Path;
492f957a 1632 else
b8eba208 1633 Res << Path;
492f957a 1634 }
b8eba208
DK
1635
1636 return Res.str();
93bf083d
AL
1637}
1638 /*}}}*/
b2e465d6 1639// URI::SiteOnly - Return the schema and site for the URI /*{{{*/
171c75f1 1640string URI::SiteOnly(const string &URI)
b2e465d6
AL
1641{
1642 ::URI U(URI);
171c75f1
MV
1643 U.User.clear();
1644 U.Password.clear();
1645 U.Path.clear();
b2e465d6
AL
1646 return U;
1647}
1648 /*}}}*/
1da3b7b8
DK
1649// URI::ArchiveOnly - Return the schema, site and cleaned path for the URI /*{{{*/
1650string URI::ArchiveOnly(const string &URI)
1651{
1652 ::URI U(URI);
1653 U.User.clear();
1654 U.Password.clear();
1655 if (U.Path.empty() == false && U.Path[U.Path.length() - 1] == '/')
1656 U.Path.erase(U.Path.length() - 1);
1657 return U;
1658}
1659 /*}}}*/
5e02df82 1660// URI::NoUserPassword - Return the schema, site and path for the URI /*{{{*/
5e02df82
MV
1661string URI::NoUserPassword(const string &URI)
1662{
1663 ::URI U(URI);
1664 U.User.clear();
1665 U.Password.clear();
5e02df82
MV
1666 return U;
1667}
1668 /*}}}*/