mirror of
http://galexander.org/git/simplesshd.git
synced 2024-11-27 17:58:13 +00:00
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/** \ingroup popt
|
|
* \file popt/findme.c
|
|
*/
|
|
|
|
/* (C) 1998-2002 Red Hat, Inc. -- Licensing details are in the COPYING
|
|
file accompanying popt source distributions, available from
|
|
ftp://ftp.rpm.org/pub/rpm/dist. */
|
|
|
|
#include "system.h"
|
|
#include "findme.h"
|
|
|
|
const char * findProgramPath(const char * argv0)
|
|
{
|
|
char * path = getenv("PATH");
|
|
char * pathbuf;
|
|
char * start, * chptr;
|
|
char * buf;
|
|
size_t bufsize;
|
|
|
|
if (argv0 == NULL) return NULL; /* XXX can't happen */
|
|
/* If there is a / in the argv[0], it has to be an absolute path */
|
|
if (strchr(argv0, '/'))
|
|
return xstrdup(argv0);
|
|
|
|
if (path == NULL) return NULL;
|
|
|
|
bufsize = strlen(path) + 1;
|
|
start = pathbuf = alloca(bufsize);
|
|
if (pathbuf == NULL) return NULL; /* XXX can't happen */
|
|
strlcpy(pathbuf, path, bufsize);
|
|
bufsize += sizeof "/" - 1 + strlen(argv0);
|
|
buf = malloc(bufsize);
|
|
if (buf == NULL) return NULL; /* XXX can't happen */
|
|
|
|
chptr = NULL;
|
|
/*@-branchstate@*/
|
|
do {
|
|
if ((chptr = strchr(start, ':')))
|
|
*chptr = '\0';
|
|
snprintf(buf, bufsize, "%s/%s", start, argv0);
|
|
|
|
if (!access(buf, X_OK))
|
|
return buf;
|
|
|
|
if (chptr)
|
|
start = chptr + 1;
|
|
else
|
|
start = NULL;
|
|
} while (start && *start);
|
|
/*@=branchstate@*/
|
|
|
|
free(buf);
|
|
|
|
return NULL;
|
|
}
|