/* $OpenBSD: mknetid.c,v 1.6 2001/01/11 23:37:22 deraadt Exp $ */ /* * Copyright (c) 1996 Mats O Jansson * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Mats O Jansson * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #ifndef LINT static char rcsid[] = "$OpenBSD: mknetid.c,v 1.6 2001/01/11 23:37:22 deraadt Exp $"; #endif #include #include #include #include #include #include #include #include #include struct user { char *usr_name; /* user name */ int usr_uid; /* user uid */ int usr_gid; /* user gid */ int gid_count; /* number of gids */ int gid[NGROUPS]; /* additional gids */ struct user *prev, *next; /* links in read order */ struct user *hprev, *hnext; /* links in hash order */ }; #ifdef HOSTS char *HostFile = HOSTS; #else char *HostFile = _PATH_HOSTS; #endif #ifdef PASSWD char *PasswdFile = PASSWD; #else char *PasswdFile = _PATH_PASSWD; #endif #ifdef GROUP char *GroupFile = GROUP; #else char *GroupFile = _PATH_GROUP; #endif #ifdef NETID char *NetidFile = NETID; #else char *NetidFile = "/etc/netid"; #endif #define HASHMAX 55 char *ProgramName = "mknetid"; struct user *root = NULL, *tail = NULL; struct user *hroot[HASHMAX], *htail[HASHMAX]; int read_line(fp, buf, size) FILE *fp; char *buf; int size; { int done = 0; do { while (fgets(buf, size, fp)) { int len = strlen(buf); done += len; if (len > 1 && buf[len-2] == '\\' && buf[len-1] == '\n') { int ch; buf += len - 2; size -= len - 2; *buf = '\n'; buf[1] = '\0'; /* * Skip leading white space on next line */ while ((ch = getc(fp)) != EOF && isascii(ch) && isspace(ch)) ; (void) ungetc(ch, fp); } else { return done; } } } while (size > 0 && !feof(fp)); return done; } int hashidx(key) char key; { if (key < 'A') return (0); if (key <= 'Z') return (1 + key - 'A'); if (key < 'a') return (27); if (key <= 'z') return (28 + key - 'a'); return (54); } void add_user(username, uid, gid) char *username, *uid, *gid; { struct user *u; int idx; u = (struct user *) malloc(sizeof(struct user)); if (u == NULL) err(1, "malloc"); bzero(u, sizeof(struct user)); u->usr_name = strdup(username); if (u->usr_name == NULL) err(1, "strdup"); u->usr_uid = atoi(uid); u->usr_gid = atoi(gid); u->gid_count = -1; if (root == NULL) { root = tail = u; } else { u->prev = tail; tail->next = u; tail = u; } idx = hashidx(username[0]); if (hroot[idx] == NULL) { hroot[idx] = htail[idx] = u; } else { u->hprev = htail[idx]; htail[idx]->hnext = u; htail[idx] = u; } } void add_group(username, gid) char *username, *gid; { struct user *u; int idx, g; idx = hashidx(username[0]); u = hroot[idx]; g = atoi(gid); while (u != NULL) { if (strcmp(username, u->usr_name) == 0) { if (g != u->usr_gid) { u->gid_count++; if (u->gid_count < NGROUPS) { u->gid[u->gid_count]=atoi(gid); } } u = htail[idx]; } u = u->hnext; } } void read_passwd(pfile, fname) FILE *pfile; char *fname; { char line[1024]; int line_no = 0; int len, colon; char *p, *k, *u, *g; while (read_line(pfile, line, sizeof(line))) { line_no++; len = strlen(line); if (len > 0) { if (line[0] == '#') continue; } /* * Check if we have the whole line */ if (line[len-1] != '\n') { fprintf(stderr, "line %d in \"%s\" is too long\n", line_no, fname); } else { line[len-1] = '\0'; } p = (char *) &line; k = p; colon = 0; while (*k != '\0') { if (*k == ':') colon++; k++; } if (colon > 0) { k = p; /* save start of key */ while (*p != ':') p++; /* find first "colon" */ if (*p==':') *p++ = '\0'; /* terminate key */ if (strlen(k) == 1) { if (*k == '+') continue; } } if (colon < 4) { fprintf(stderr, "syntax error at line %d in \"%s\"\n", line_no, fname); continue; } while (*p != ':') p++; /* find second "colon" */ if (*p==':') *p++ = '\0'; /* terminate passwd */ u = p; while (*p != ':') p++; /* find third "colon" */ if (*p==':') *p++ = '\0'; /* terminate uid */ g = p; while (*p != ':') p++; /* find fourth "colon" */ if (*p==':') *p++ = '\0'; /* terminate gid */ while (*p != '\0') p++; /* find end of string */ add_user(k, u, g); } } int isgsep(ch) char ch; { switch(ch) { case ',': case ' ': case '\t': case '\0': return (1); default: return (0); } } void read_group(gfile, fname) FILE *gfile; char *fname; { char line[2048]; int line_no = 0; int len, colon; char *p, *k, *u, *g; while (read_line(gfile, line, sizeof(line))) { line_no++; len = strlen(line); if (len > 0) { if (line[0] == '#') continue; } /* * Check if we have the whole line */ if (line[len-1] != '\n') { fprintf(stderr, "line %d in \"%s\" is too long\n", line_no, fname); } else { line[len-1] = '\0'; } p = (char *) &line; k = p; colon = 0; while (*k != '\0') { if (*k == ':') colon++; k++; } if (colon > 0) { k = p; /* save start of key */ while (*p != ':') p++; /* find first "colon" */ if (*p==':') *p++ = '\0'; /* terminate key */ if (strlen(k) == 1) { if (*k == '+') continue; } } if (colon < 3) { fprintf(stderr, "syntax error at line %d in \"%s\"\n", line_no, fname); continue; } while (*p != ':') p++; /* find second "colon" */ if (*p==':') *p++ = '\0'; /* terminate passwd */ g = p; while (*p != ':') p++; /* find third "colon" */ if (*p==':') *p++ = '\0'; /* terminate gid */ u = p; while (*u != '\0') { while (!isgsep(*p)) p++; /* find separator */ if (*p != '\0') { *p = '\0'; if (u != p) add_group(u, g); p++; } else { if (u != p) add_group(u, g); } u = p; } } } void print_passwd_group(qflag, domain) int qflag; char *domain; { struct user *u, *p; int i; u = root; while (u != NULL) { p = root; while (p->usr_uid != u->usr_uid) p = p->next; if (p != u) { if (!qflag) { fprintf(stderr, "%s: unix.%d@%s %s\n", ProgramName, u->usr_uid, domain, "multiply defined, other definitions ignored"); } } else { printf("unix.%d@%s %d:%d", u->usr_uid, domain, u->usr_uid, u->usr_gid); if (u->gid_count >= 0) { i = 0; while (i <= u->gid_count) { printf(",%d", u->gid[i]); i++; } } printf("\n"); } u = u->next; } } void print_hosts(pfile, fname, domain) FILE *pfile; char *fname, *domain; { char line[1024]; int line_no = 0; int len, colon; char *p, *k, *u; while (read_line(pfile, line, sizeof(line))) { line_no++; len = strlen(line); if (len > 0) { if (line[0] == '#') continue; } /* * Check if we have the whole line */ if (line[len-1] != '\n') { fprintf(stderr, "line %d in \"%s\" is too long\n", line_no, fname); } else { line[len-1] = '\0'; } p = (char *) &line; k = p; /* save start of key */ while (!isspace(*p)) p++; /* find first "space" */ while (isspace(*p)) *p++ = '\0'; /* replace space with */ u = p; while (p != NULL) { if (*p == '\0') { p = NULL; } else { if (!isspace(*p)) { p++; } else { *p = '\0'; p = NULL; } } } printf("unix.%s@%s 0:%s\n", u, domain, u); } } void print_netid(mfile, fname) FILE *mfile; char *fname; { char line[1024]; int line_no = 0; int len, colon; char *p, *k, *u; while (read_line(mfile, line, sizeof(line))) { line_no++; len = strlen(line); if (len > 0) { if (line[0] == '#') continue; } /* * Check if we have the whole line */ if (line[len-1] != '\n') { fprintf(stderr, "line %d in \"%s\" is too long\n", line_no, fname); } else { line[len-1] = '\0'; } p = (char *) &line; k = p; /* save start of key */ while (!isspace(*p)) p++; /* find first "space" */ while (isspace(*p)) *p++ = '\0'; /* replace space with */ u = p; while (p != NULL) { if (*p == '\0') { p = NULL; } else { if (!isspace(*p)) { p++; } else { *p = '\0'; p = NULL; } } } printf("%s %s\n", k, u); } } int main(argc, argv) int argc; char *argv[]; { int qflag, ch, usage; char *domain; FILE *pfile, *gfile, *hfile, *mfile; qflag = usage = 0; domain = NULL; while ((ch = getopt(argc, argv, "d:g:h:m:p:q")) != -1) switch (ch) { case 'd': domain = optarg; break; case 'g': GroupFile = optarg; break; case 'h': HostFile = optarg; break; case 'm': NetidFile = optarg; break; case 'p': PasswdFile = optarg; break; case 'q': qflag++; break; default: usage++; break; } if (argc > optind) { usage++; } if (usage) { fprintf(stderr, "usage:\t%s [-d domain] [-q] [-p passwdfile] [-g groupfile]\n" "\t\t[-h hostfile] [-m netidfile]\n", ProgramName); exit(1); } if (domain == NULL) { yp_get_default_domain(&domain); } pfile = fopen(PasswdFile, "r"); if (pfile == NULL) { fprintf(stderr,"%s: can't open file \"%s\"\n", ProgramName, PasswdFile); exit(1); } gfile = fopen(GroupFile, "r"); if (gfile == NULL) { fprintf(stderr,"%s: can't open file \"%s\"\n", ProgramName, PasswdFile); exit(1); } hfile = fopen(HostFile, "r"); if (hfile == NULL) { fprintf(stderr,"%s: can't open file \"%s\"\n", ProgramName, PasswdFile); exit(1); } printf("NetidFile: %s\n", NetidFile); mfile = fopen(NetidFile, "r"); read_passwd(pfile, PasswdFile); read_group(gfile, GroupFile); print_passwd_group(qflag, domain); print_hosts(hfile, HostFile, domain); if (mfile != NULL) print_netid(mfile, NetidFile); return (0); }