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- /******************************************************************************
- ******************************************************************************
- * NOTE! This program is not safe as a setuid executable! Do not make it
- * setuid!
- ******************************************************************************
- *****************************************************************************/
- /*
- * htdigest.c: simple program for manipulating digest passwd file for Apache
- *
- * by Alexei Kosut, based on htpasswd.c, by Rob McCool
- */
-
- #include "ap_config.h"
- #include <sys/types.h>
- #if defined(MPE) || defined(QNX)
- #include <signal.h>
- #else
- #include <sys/signal.h>
- #endif
- #include "ap_md5.h"
-
- #define LF 10
- #define CR 13
-
- #define MAX_STRING_LEN 256
-
- char *tn;
-
- static char *strd(char *s)
- {
- char *d;
-
- d = (char *) malloc(strlen(s) + 1);
- strcpy(d, s);
- return (d);
- }
-
- static void getword(char *word, char *line, char stop)
- {
- int x = 0, y;
-
- for (x = 0; ((line[x]) && (line[x] != stop)); x++)
- word[x] = line[x];
-
- word[x] = '\0';
- if (line[x])
- ++x;
- y = 0;
-
- while ((line[y++] = line[x++]));
- }
-
- static int getline(char *s, int n, FILE *f)
- {
- register int i = 0;
-
- while (1) {
- s[i] = (char) fgetc(f);
-
- if (s[i] == CR)
- s[i] = fgetc(f);
-
- if ((s[i] == 0x4) || (s[i] == LF) || (i == (n - 1))) {
- s[i] = '\0';
- return (feof(f) ? 1 : 0);
- }
- ++i;
- }
- }
-
- static void putline(FILE *f, char *l)
- {
- int x;
-
- for (x = 0; l[x]; x++)
- fputc(l[x], f);
- fputc('\n', f);
- }
-
-
- static void add_password(char *user, char *realm, FILE *f)
- {
- char *pw;
- AP_MD5_CTX context;
- unsigned char digest[16];
- char string[MAX_STRING_LEN];
- unsigned int i;
-
- pw = strd((char *) getpass("New password:"));
- if (strcmp(pw, (char *) getpass("Re-type new password:"))) {
- fprintf(stderr, "They don't match, sorry.\n");
- if (tn)
- unlink(tn);
- exit(1);
- }
- fprintf(f, "%s:%s:", user, realm);
-
- /* Do MD5 stuff */
- sprintf(string, "%s:%s:%s", user, realm, pw);
-
- ap_MD5Init(&context);
- ap_MD5Update(&context, (unsigned char *) string, strlen(string));
- ap_MD5Final(digest, &context);
-
- for (i = 0; i < 16; i++)
- fprintf(f, "%02x", digest[i]);
-
- fprintf(f, "\n");
- }
-
- static void usage(void)
- {
- fprintf(stderr, "Usage: htdigest [-c] passwordfile realm username\n");
- fprintf(stderr, "The -c flag creates a new file.\n");
- exit(1);
- }
-
- static void interrupted(void)
- {
- fprintf(stderr, "Interrupted.\n");
- if (tn)
- unlink(tn);
- exit(1);
- }
-
- 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 (*)()) interrupted);
- if (argc == 5) {
- if (strcmp(argv[1], "-c"))
- usage();
- 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);
- }
- strcpy(user, argv[3]);
- strcpy(realm, argv[2]);
-
- 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);
- #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);
- unlink(tn);
- exit(0);
- }
-