int main(int argc, char *argv[])
{
FILE *tfp, *f;
char user[MAX_STRING_LEN];
char realm[MAX_STRING_LEN];
char line[MAX_STRING_LEN];
char l[MAX_STRING_LEN];
char w[MAX_STRING_LEN];
char x[MAX_STRING_LEN];
char command[MAX_STRING_LEN];
int found;
tn = NULL;
signal(SIGINT, (void (*)(int)) interrupted);
if (argc == 5) {
if (strcmp(argv[1], "-c"))
usage();
#ifdef NETWARE
UnAugmentAsterisk(TRUE);
SetCurrentNameSpace(NW_NS_LONG);
SetTargetNameSpace(NW_NS_LONG);
#endif
if (!(tfp = fopen(argv[2], "w"))) {
fprintf(stderr, "Could not open passwd file %s for writing.\n",
argv[2]);
perror("fopen");
exit(1);
}
printf("Adding password for %s in realm %s.\n", argv[4], argv[3]);
add_password(argv[4], argv[3], tfp);
fclose(tfp);
exit(0);
}
else if (argc != 4)
usage();
tn = tmpnam(NULL);
if (!(tfp = fopen(tn, "w"))) {
fprintf(stderr, "Could not open temp file.\n");
exit(1);
}
if (!(f = fopen(argv[1], "r"))) {
fprintf(stderr,
"Could not open passwd file %s for reading.\n", argv[1]);
fprintf(stderr, "Use -c option to create new one.\n");
exit(1);
}
ap_cpystrn(user, argv[3], sizeof(user));
ap_cpystrn(realm, argv[2], sizeof(realm));
found = 0;
while (!(getline(line, MAX_STRING_LEN, f))) {
if (found || (line[0] == '#') || (!line[0])) {
putline(tfp, line);
continue;
}
strcpy(l, line);
getword(w, l, ':');
getword(x, l, ':');
if (strcmp(user, w) || strcmp(realm, x)) {
putline(tfp, line);
continue;
}
else {
printf("Changing password for user %s in realm %s\n", user, realm);
add_password(user, realm, tfp);
found = 1;
}
}
if (!found) {
printf("Adding user %s in realm %s\n", user, realm);
add_password(user, realm, tfp);
}
fclose(f);
fclose(tfp);
#ifndef NETWARE
#if defined(OS2) || defined(WIN32)
sprintf(command, "copy \"%s\" \"%s\"", tn, argv[1]);
#else
sprintf(command, "cp %s %s", tn, argv[1]);
#endif
system(command);
#else
if (!(tfp = fopen(tn, "r"))) {
fprintf(stderr, "Could not open temp file.\n");
exit(1);
}
if (!(f = fopen(argv[1], "w"))) {
fprintf(stderr, "Could not open %s.\n", argv[1]);
exit(1);
}
copy_file(f, tfp);
#endif
unlink(tn);
return 0;
}
/*
* Let's do it. We end up doing a lot of file opening and closing,
* but what do we care? This application isn't run constantly.
*/
int main(int argc, char *argv[])
{
FILE *ftemp = NULL;
FILE *fpw = NULL;
char user[MAX_STRING_LEN];
char password[MAX_STRING_LEN];
char record[MAX_STRING_LEN];
char line[MAX_STRING_LEN];
char pwfilename[MAX_STRING_LEN];
char *arg;
int found = 0;
int alg = ALG_CRYPT;
int newfile = 0;
int nofile = 0;
int noninteractive = 0;
int i;
int args_left = 2;
tempfilename = NULL;
signal(SIGINT, (void (*)(int)) interrupted);
/*
* Preliminary check to make sure they provided at least
* three arguments, we'll do better argument checking as
* we parse the command line.
*/
if (argc < 3) {
return usage();
}
/*
* Go through the argument list and pick out any options. They
* have to precede any other arguments.
*/
for (i = 1; i < argc; i++) {
arg = argv[i];
if (*arg != '-') {
break;
}
while (*++arg != '\0') {
if (*arg == 'c') {
newfile++;
}
else if (*arg == 'n') {
nofile++;
args_left--;
}
else if (*arg == 'm') {
alg = ALG_APMD5;
}
else if (*arg == 's') {
alg = ALG_APSHA;
}
else if (*arg == 'p') {
alg = ALG_PLAIN;
}
else if (*arg == 'd') {
alg = ALG_CRYPT;
}
else if (*arg == 'b') {
noninteractive++;
args_left++;
}
else {
return usage();
}
}
}
/*
* Make sure we still have exactly the right number of arguments left
* (the filename, the username, and possibly the password if -b was
* specified).
*/
if ((argc - i) != args_left) {
return usage();
}
#ifdef NETWARE
UnAugmentAsterisk(TRUE);
SetCurrentNameSpace(NW_NS_LONG);
SetTargetNameSpace(NW_NS_LONG);
#endif
if (newfile && nofile) {
fprintf(stderr, "%s: -c and -n options conflict\n", argv[0]);
return ERR_SYNTAX;
}
if (nofile) {
i--;
}
else {
if (strlen(argv[i]) > (sizeof(pwfilename) - 1)) {
fprintf(stderr, "%s: filename too long\n", argv[0]);
return ERR_OVERFLOW;
}
strcpy(pwfilename, argv[i]);
if (strlen(argv[i + 1]) > (sizeof(user) - 1)) {
fprintf(stderr, "%s: username too long (>%lu)\n", argv[0],
(unsigned long)(sizeof(user) - 1));
return ERR_OVERFLOW;
}
}
strcpy(user, argv[i + 1]);
if ((arg = strchr(user, ':')) != NULL) {
fprintf(stderr, "%s: username contains illegal character '%c'\n",
argv[0], *arg);
return ERR_BADUSER;
}
if (noninteractive) {
if (strlen(argv[i + 2]) > (sizeof(password) - 1)) {
fprintf(stderr, "%s: password too long (>%lu)\n", argv[0],
(unsigned long)(sizeof(password) - 1));
return ERR_OVERFLOW;
}
strcpy(password, argv[i + 2]);
}
#ifdef WIN32
if (alg == ALG_CRYPT) {
alg = ALG_APMD5;
fprintf(stderr, "Automatically using MD5 format on Windows.\n");
}
#elif defined(TPF) || defined(NETWARE)
if (alg == ALG_CRYPT) {
alg = ALG_APMD5;
fprintf(stderr, "Automatically using MD5 format.\n");
}
#endif
#if (!(defined(WIN32) || defined(TPF) || defined(NETWARE)))
if (alg == ALG_PLAIN) {
fprintf(stderr,"Warning: storing passwords as plain text might "
"just not work on this platform.\n");
}
#endif
if (! nofile) {
/*
* Only do the file checks if we're supposed to frob it.
*
* Verify that the file exists if -c was omitted. We give a special
* message if it doesn't.
*/
if ((! newfile) && (! exists(pwfilename))) {
fprintf(stderr,
"%s: cannot modify file %s; use '-c' to create it\n",
argv[0], pwfilename);
perror("fopen");
exit(ERR_FILEPERM);
}
/*
* Verify that we can read the existing file in the case of an update
* to it (rather than creation of a new one).
*/
if ((! newfile) && (! readable(pwfilename))) {
fprintf(stderr, "%s: cannot open file %s for read access\n",
argv[0], pwfilename);
perror("fopen");
exit(ERR_FILEPERM);
}
/*
* Now check to see if we can preserve an existing file in case
* of password verification errors on a -c operation.
*/
if (newfile && exists(pwfilename) && (! readable(pwfilename))) {
fprintf(stderr, "%s: cannot open file %s for read access\n"
"%s: existing auth data would be lost on "
"password mismatch",
argv[0], pwfilename, argv[0]);
perror("fopen");
exit(ERR_FILEPERM);
}
/*
* Now verify that the file is writable!
*/
if (! writable(pwfilename)) {
fprintf(stderr, "%s: cannot open file %s for write access\n",
argv[0], pwfilename);
perror("fopen");
exit(ERR_FILEPERM);
}
}
/*
* All the file access checks (if any) have been made. Time to go to work;
* try to create the record for the username in question. If that
* fails, there's no need to waste any time on file manipulations.
* Any error message text is returned in the record buffer, since
* the mkrecord() routine doesn't have access to argv[].
*/
i = mkrecord(user, record, sizeof(record) - 1,
noninteractive ? password : NULL,
alg);
if (i != 0) {
fprintf(stderr, "%s: %s\n", argv[0], record);
exit(i);
}
if (nofile) {
printf("%s\n", record);
exit(0);
}
/*
* We can access the files the right way, and we have a record
* to add or update. Let's do it..
*/
errno = 0;
tempfilename = tmpnam(tname_buf);
if ((tempfilename == NULL) || (*tempfilename == '\0')) {
fprintf(stderr, "%s: unable to generate temporary filename\n",
argv[0]);
if (errno == 0) {
errno = ENOENT;
}
perror("tmpnam");
exit(ERR_FILEPERM);
}
ftemp = fopen(tempfilename, "w+");
if (ftemp == NULL) {
fprintf(stderr, "%s: unable to create temporary file '%s'\n", argv[0],
tempfilename);
perror("fopen");
exit(ERR_FILEPERM);
}
/*
* If we're not creating a new file, copy records from the existing
* one to the temporary file until we find the specified user.
*/
if (! newfile) {
char scratch[MAX_STRING_LEN];
fpw = fopen(pwfilename, "r");
while (! (getline(line, sizeof(line), fpw))) {
char *colon;
if ((line[0] == '#') || (line[0] == '\0')) {
putline(ftemp, line);
continue;
}
strcpy(scratch, line);
/*
* See if this is our user.
*/
colon = strchr(scratch, ':');
if (colon != NULL) {
*colon = '\0';
}
if (strcmp(user, scratch) != 0) {
putline(ftemp, line);
continue;
}
found++;
break;
}
}
if (found) {
fprintf(stderr, "Updating ");
}
else {
fprintf(stderr, "Adding ");
}
fprintf(stderr, "password for user %s\n", user);
/*
* Now add the user record we created.
*/
putline(ftemp, record);
/*
* If we're updating an existing file, there may be additional
* records beyond the one we're updating, so copy them.
*/
if (! newfile) {
copy_file(ftemp, fpw);
fclose(fpw);
}
/*
* The temporary file now contains the information that should be
* in the actual password file. Close the open files, re-open them
* in the appropriate mode, and copy them file to the real one.
*/
fclose(ftemp);
fpw = fopen(pwfilename, "w+");
ftemp = fopen(tempfilename, "r");
copy_file(fpw, ftemp);
fclose(fpw);
fclose(ftemp);
unlink(tempfilename);
return 0;
}
