+++ /dev/null
-/*
- * oidParser.cpp - parse an Intel-style OID, with the assistance of dumpasn1.cfg
- */
-
-#include <Security/cssmtype.h>
-#include <string.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include "oidParser.h"
-#include "fileIo.h"
-#include <fcntl.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-/* get config file from .. or from . */
-#define CONFIG_FILE_NAME "dumpasn1.cfg"
-static char *CONFIG_FILE1 = "../"CONFIG_FILE_NAME;
-static char *CONFIG_FILE2 = CONFIG_FILE_NAME;
-/* or from here via getenv */
-#define CONFIG_FILE_ENV "LOCAL_BUILD_DIR"
-
-static char *OID_ENTRY_START = "OID = ";
-static char *OID_DESCR_START = "Description = ";
-/*
- * Read entire file with extra bytes left over in the mallocd buffer.
- */
-int readFileExtra(
- char *fileName,
- unsigned extraBytes,
- unsigned char **bytes, // mallocd and returned
- unsigned *numBytes) // returned
-{
- int rtn;
- int fd;
- unsigned char *buf;
- struct stat sb;
- unsigned size;
-
- *numBytes = 0;
- *bytes = NULL;
- fd = open(fileName, O_RDONLY, 0);
- if(fd <= 0) {
- return 1;
- }
- rtn = fstat(fd, &sb);
- if(rtn) {
- goto errOut;
- }
- size = sb.st_size;
- buf = (unsigned char *)malloc(size + extraBytes);
- if(buf == NULL) {
- rtn = ENOMEM;
- goto errOut;
- }
- rtn = lseek(fd, 0, SEEK_SET);
- if(rtn < 0) {
- goto errOut;
- }
- rtn = read(fd, buf, (size_t)size);
- if(rtn != (int)size) {
- if(rtn >= 0) {
- printf("readFile: short read\n");
- }
- rtn = EIO;
- }
- else {
- rtn = 0;
- *bytes = buf;
- *numBytes = size;
- }
-errOut:
- close(fd);
- return rtn;
-}
-
-/*
- * Attempt to read dumpasn1.cfg from various places. If we can't find it,
- * printOid() function will just print raw bytes as it
- * would if the .cfg file did not contain the desired OID.
- */
-static CSSM_DATA_PTR readConfig()
-{
- CSSM_DATA_PTR configData = NULL;
- int rtn;
-
- configData = (CSSM_DATA_PTR)malloc(sizeof(CSSM_DATA));
- if(configData == NULL) {
- return NULL;
- }
- /* malloc one extra byte, we'll null it later */
- rtn = readFileExtra(CONFIG_FILE1, 1, &configData->Data,
- (unsigned *)&configData->Length);
- if(rtn) {
- rtn = readFileExtra(CONFIG_FILE2, 1, &configData->Data,
- (unsigned *)&configData->Length);
- }
- if(rtn) {
- char fileName[100];
- char *localBuildDir = getenv(CONFIG_FILE_ENV);
- if(localBuildDir == NULL) {
- rtn = 1;
- }
- else {
- sprintf(fileName, "%s/%s", localBuildDir, CONFIG_FILE_NAME);
- rtn = readFileExtra(fileName, 1, &configData->Data,
- (unsigned *)&configData->Length);
- }
- }
- if(rtn == 0) {
- /* make the whole shebang one long C string */
- configData->Data[configData->Length++] = '\0';
- return configData;
- }
- else {
- printf("""warning: no OID parser config file\n");
- free(configData);
- return NULL;
- }
-}
-
-/*
- * The heart of this module.
- *
- * -- Convert Intel-style OID to a string which might be found
- * in the config file
- * -- search config file for that string
- * -- if found, use that entry in config file to output meaningful
- * string and return CSSM_TRUE. Else return CSSM_FALSE.
- */
-static CSSM_BOOL parseOidWithConfig(
- const CSSM_DATA_PTR configData,
- const CSSM_OID_PTR oid,
- char *strBuf)
-{
- char *fullOidStr = NULL;
- char *ourEntry = NULL;
- char *nextEntry = NULL;
- char *descStart = NULL;
- char *cp;
- unsigned i;
- CSSM_BOOL brtn;
- char *nextCr; // next CR if any
- char *nextNl; // next NL if any
- char *eol; // end of line
- int len;
-
- if(configData == NULL) {
- return CSSM_FALSE;
- }
-
- /* cook up a full OID string, with tag and length */
- fullOidStr = (char *)malloc((3 * oid->Length) +
- // 2 chars plus space per byte
- strlen(OID_ENTRY_START) + // "OID = "
- 6 + // 06 xx - tag and length
- 1); // NULL
- if(fullOidStr == NULL) {
- return CSSM_FALSE;
- }
- /* subsequent errors to errOut: */
-
- sprintf(fullOidStr, "OID = 06 %02X", (unsigned)oid->Length);
- cp = fullOidStr + strlen(fullOidStr);
- for(i=0; i<oid->Length; i++) {
- /* move cp to current end of string */
- cp += strlen(cp);
- /* add one byte */
- sprintf(cp, " %02X", oid->Data[i]);
- }
-
- /*
- * Let's play it loose and assume that there are no embedded NULLs
- * in the config file. Thus we can use the spiffy string functions
- * in stdlib.
- */
- ourEntry = strstr((char *)configData->Data, fullOidStr);
- if(ourEntry == NULL) {
- brtn = CSSM_FALSE;
- goto errOut;
- }
-
- /* get position of NEXT full entry - may be NULL (end of file) */
- nextEntry = strstr(ourEntry+1, OID_ENTRY_START);
-
- /* get position of our entry's description line */
- descStart = strstr(ourEntry+1, OID_DESCR_START);
-
- /* handle not found/overflow */
- if( (descStart == NULL) || // no more description lines
- ( (descStart > nextEntry) && // no description in THIS entry
- (nextEntry != NULL) ) ) { // make sure this is valid
- brtn = CSSM_FALSE;
- goto errOut;
- }
-
- /* set descStart to after the leader */
- descStart += strlen(OID_DESCR_START);
-
- /*
- * descStart points to the text we're interested in.
- * First find end of line, any style.
- */
- nextNl = strchr(descStart, '\n');
- nextCr = strchr(descStart, '\r');
- if((nextNl == NULL) && (nextCr == NULL)) {
- /* no line terminator, go to eof */
- eol = (char *)configData->Data + configData->Length;
- }
- else if(nextCr == NULL) {
- eol = nextNl;
- }
- else if(nextNl == NULL) {
- eol = nextCr;
- }
- else if(nextNl < nextCr) {
- /* both present, take first one */
- eol = nextNl;
- }
- else {
- eol = nextCr;
- }
-
- /* caller's string buf = remainder of description line */
- len = eol - descStart;
- if(len > (OID_PARSER_STRING_SIZE - 1)) {
- /* fixed-length output buf, avoid overflow */
- len = OID_PARSER_STRING_SIZE - 1;
- }
- memcpy(strBuf, descStart, len);
- strBuf[len] = '\0';
- brtn = CSSM_TRUE;
-errOut:
- if(fullOidStr != NULL) {
- free(fullOidStr);
- }
- return brtn;
-}
-
-/*** OidParser class ***/
-OidParser::OidParser(bool noConfig)
-{
- if(noConfig) {
- configData = NULL;
- }
- else {
- configData = readConfig();
- }
-}
-
-OidParser::~OidParser()
-{
- if(configData == NULL) {
- return;
- }
- if(configData->Data != NULL) {
- free(configData->Data);
- }
- free(configData);
-}
-
-/*
- * Parse an Intel-style OID, generating a C string in caller-supplied buffer.
- */
-void OidParser::oidParse(
- const unsigned char *oidp,
- unsigned oidLen,
- char *strBuf)
-{
- unsigned i;
- CSSM_OID oid;
-
- oid.Data = (uint8 *)oidp;
- oid.Length = oidLen;
-
- if((oidLen == 0) || (oidp == NULL)) {
- strcpy(strBuf, "EMPTY");
- return;
- }
- if(parseOidWithConfig(configData, &oid, strBuf) == CSSM_FALSE) {
- /* no config file, just dump the bytes */
- char cbuf[8];
-
- sprintf(strBuf, "OID : < 06 %02X ", (unsigned)oid.Length);
- for(i=0; i<oid.Length; i++) {
- sprintf(cbuf, "%02X ", oid.Data[i]);
- strcat(strBuf, cbuf);
- }
- strcat(strBuf, ">");
- }
-}
-
-
projects / apple / security.git / blobdiff