mirror of
https://github.com/samba-team/samba.git
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dc64af1d2e
source code.
(This used to be commit 9559886a92
)
191 lines
4.6 KiB
C
191 lines
4.6 KiB
C
/** \ingroup popt
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* \file popt/poptconfig.c
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*/
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/* (C) 1998-2002 Red Hat, Inc. -- Licensing details are in the COPYING
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file accompanying popt source distributions, available from
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ftp://ftp.rpm.org/pub/rpm/dist. */
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#include "system.h"
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#include "poptint.h"
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/*@-compmempass@*/ /* FIX: item->option.longName kept, not dependent. */
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static void configLine(poptContext con, char * line)
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/*@modifies con @*/
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{
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/*@-type@*/
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int nameLength = strlen(con->appName);
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/*@=type@*/
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const char * entryType;
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const char * opt;
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poptItem item = alloca(sizeof(*item));
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int i, j;
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/*@-boundswrite@*/
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memset(item, 0, sizeof(*item));
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/*@-type@*/
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if (strncmp(line, con->appName, nameLength)) return;
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/*@=type@*/
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line += nameLength;
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if (*line == '\0' || !isspace(*line)) return;
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while (*line != '\0' && isspace(*line)) line++;
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entryType = line;
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while (*line == '\0' || !isspace(*line)) line++;
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*line++ = '\0';
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while (*line != '\0' && isspace(*line)) line++;
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if (*line == '\0') return;
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opt = line;
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while (*line == '\0' || !isspace(*line)) line++;
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*line++ = '\0';
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while (*line != '\0' && isspace(*line)) line++;
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if (*line == '\0') return;
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/*@-temptrans@*/ /* FIX: line alias is saved */
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if (opt[0] == '-' && opt[1] == '-')
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item->option.longName = opt + 2;
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else if (opt[0] == '-' && opt[2] == '\0')
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item->option.shortName = opt[1];
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/*@=temptrans@*/
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if (poptParseArgvString(line, &item->argc, &item->argv)) return;
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/*@-modobserver@*/
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item->option.argInfo = POPT_ARGFLAG_DOC_HIDDEN;
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for (i = 0, j = 0; i < item->argc; i++, j++) {
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const char * f;
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if (!strncmp(item->argv[i], "--POPTdesc=", sizeof("--POPTdesc=")-1)) {
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f = item->argv[i] + sizeof("--POPTdesc=");
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if (f[0] == '$' && f[1] == '"') f++;
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item->option.descrip = f;
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item->option.argInfo &= ~POPT_ARGFLAG_DOC_HIDDEN;
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j--;
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} else
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if (!strncmp(item->argv[i], "--POPTargs=", sizeof("--POPTargs=")-1)) {
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f = item->argv[i] + sizeof("--POPTargs=");
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if (f[0] == '$' && f[1] == '"') f++;
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item->option.argDescrip = f;
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item->option.argInfo &= ~POPT_ARGFLAG_DOC_HIDDEN;
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item->option.argInfo |= POPT_ARG_STRING;
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j--;
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} else
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if (j != i)
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item->argv[j] = item->argv[i];
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}
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if (j != i) {
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item->argv[j] = NULL;
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item->argc = j;
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}
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/*@=modobserver@*/
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/*@=boundswrite@*/
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/*@-nullstate@*/ /* FIX: item->argv[] may be NULL */
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if (!strcmp(entryType, "alias"))
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(void) poptAddItem(con, item, 0);
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else if (!strcmp(entryType, "exec"))
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(void) poptAddItem(con, item, 1);
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/*@=nullstate@*/
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}
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/*@=compmempass@*/
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int poptReadConfigFile(poptContext con, const char * fn)
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{
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const char * file, * chptr, * end;
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char * buf;
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/*@dependent@*/ char * dst;
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int fd, rc;
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off_t fileLength;
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fd = open(fn, O_RDONLY);
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if (fd < 0)
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return (errno == ENOENT ? 0 : POPT_ERROR_ERRNO);
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fileLength = lseek(fd, 0, SEEK_END);
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if (fileLength == -1 || lseek(fd, 0, 0) == -1) {
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rc = errno;
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(void) close(fd);
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/*@-mods@*/
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errno = rc;
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/*@=mods@*/
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return POPT_ERROR_ERRNO;
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}
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file = alloca(fileLength + 1);
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if (read(fd, (char *)file, fileLength) != fileLength) {
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rc = errno;
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(void) close(fd);
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/*@-mods@*/
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errno = rc;
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/*@=mods@*/
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return POPT_ERROR_ERRNO;
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}
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if (close(fd) == -1)
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return POPT_ERROR_ERRNO;
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/*@-boundswrite@*/
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dst = buf = alloca(fileLength + 1);
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chptr = file;
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end = (file + fileLength);
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/*@-infloops@*/ /* LCL: can't detect chptr++ */
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while (chptr < end) {
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switch (*chptr) {
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case '\n':
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*dst = '\0';
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dst = buf;
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while (*dst && isspace(*dst)) dst++;
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if (*dst && *dst != '#')
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configLine(con, dst);
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chptr++;
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/*@switchbreak@*/ break;
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case '\\':
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*dst++ = *chptr++;
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if (chptr < end) {
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if (*chptr == '\n')
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dst--, chptr++;
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/* \ at the end of a line does not insert a \n */
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else
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*dst++ = *chptr++;
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}
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/*@switchbreak@*/ break;
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default:
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*dst++ = *chptr++;
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/*@switchbreak@*/ break;
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}
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}
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/*@=infloops@*/
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/*@=boundswrite@*/
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return 0;
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}
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int poptReadDefaultConfig(poptContext con, /*@unused@*/ int useEnv)
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{
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char * fn, * home;
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int rc;
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/*@-type@*/
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if (!con->appName) return 0;
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/*@=type@*/
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rc = poptReadConfigFile(con, "/etc/popt");
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if (rc) return rc;
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#if defined(HAVE_GETUID) && defined(HAVE_GETEUID)
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if (getuid() != geteuid()) return 0;
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#endif
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if ((home = getenv("HOME"))) {
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fn = alloca(strlen(home) + 20);
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strcpy(fn, home);
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strcat(fn, "/.popt");
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rc = poptReadConfigFile(con, fn);
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if (rc) return rc;
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}
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return 0;
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}
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