X-Git-Url: http://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=pppd%2Fauth.c;h=4ac139de69ef2b11d2190a276374c42ec782320f;hp=950ef024e6b7d0d361f7d2750ecebfaa4a652cc5;hb=dee72905271845128ad26cff5cf770c433f3f4a7;hpb=a5aa46a5e2377042a0e39434fa41d4dd40e8facf diff --git a/pppd/auth.c b/pppd/auth.c index 950ef02..4ac139d 100644 --- a/pppd/auth.c +++ b/pppd/auth.c @@ -33,11 +33,12 @@ */ #ifndef lint -static char rcsid[] = "$Id: auth.c,v 1.6 1994/05/25 06:25:05 paulus Exp $"; +static char rcsid[] = "$Id: auth.c,v 1.19 1995/12/11 05:17:42 paulus Exp $"; #endif #include #include +#include #include #include #include @@ -48,16 +49,24 @@ static char rcsid[] = "$Id: auth.c,v 1.6 1994/05/25 06:25:05 paulus Exp $"; #include #include -#include "ppp.h" +#ifdef HAS_SHADOW +#include +#include +#ifndef PW_PPP +#define PW_PPP PW_LOGIN +#endif +#endif + #include "pppd.h" #include "fsm.h" #include "lcp.h" #include "upap.h" #include "chap.h" #include "ipcp.h" +#include "ccp.h" #include "pathnames.h" -#ifdef sparc +#if defined(sun) && defined(sparc) #include #endif /*sparc*/ @@ -76,20 +85,10 @@ struct wordlist { #define FALSE 0 #define TRUE 1 -extern char user[]; -extern char passwd[]; -extern char devname[]; -extern char our_name[]; -extern char remote_name[]; -extern char hostname[]; -extern int uselogin; -extern int usehostname; -extern int auth_required; - /* Records which authentication operations haven't completed yet. */ -static int auth_pending[NPPP]; +static int auth_pending[NUM_PPP]; static int logged_in; -static struct wordlist *addresses[NPPP]; +static struct wordlist *addresses[NUM_PPP]; /* Bits in auth_pending[] */ #define UPAP_WITHPEER 1 @@ -97,20 +96,20 @@ static struct wordlist *addresses[NPPP]; #define CHAP_WITHPEER 4 #define CHAP_PEER 8 -/* Prototypes */ -void check_access __ARGS((FILE *, char *)); +/* Prototypes for procedures local to this file. */ -static int login __ARGS((char *, char *, char **, int *)); -static void logout __ARGS((void)); -static int null_login __ARGS((int)); -static int get_upap_passwd __ARGS((void)); -static int have_upap_secret __ARGS((void)); -static int have_chap_secret __ARGS((char *, char *)); -static int scan_authfile __ARGS((FILE *, char *, char *, char *, +static void network_phase __P((int)); +static int login __P((char *, char *, char **, int *)); +static void logout __P((void)); +static int null_login __P((int)); +static int get_upap_passwd __P((void)); +static int have_upap_secret __P((void)); +static int have_chap_secret __P((char *, char *)); +static int scan_authfile __P((FILE *, char *, char *, char *, struct wordlist **, char *)); -static void free_wordlist __ARGS((struct wordlist *)); +static void free_wordlist __P((struct wordlist *)); -extern char *crypt __ARGS((char *, char *)); +extern char *crypt __P((char *, char *)); /* * An Open on LCP has requested a change from Dead to Establish phase. @@ -130,6 +129,8 @@ void link_terminated(unit) int unit; { + if (phase == PHASE_DEAD) + return; if (logged_in) logout(); phase = PHASE_DEAD; @@ -143,6 +144,8 @@ void link_down(unit) int unit; { + ipcp_close(0); + ccp_close(0); phase = PHASE_TERMINATE; } @@ -165,7 +168,7 @@ link_established(unit) * treat it as though it authenticated with PAP using a username * of "" and a password of "". If that's not OK, boot it out. */ - if (wo->neg_upap && !null_login(unit)) { + if (!wo->neg_upap || !null_login(unit)) { syslog(LOG_WARNING, "peer refused to authenticate"); lcp_close(unit); phase = PHASE_TERMINATE; @@ -191,10 +194,20 @@ link_established(unit) } auth_pending[unit] = auth; - if (!auth) { - phase = PHASE_NETWORK; - ipcp_open(unit); - } + if (!auth) + network_phase(unit); +} + +/* + * Proceed to the network phase. + */ +static void +network_phase(unit) + int unit; +{ + phase = PHASE_NETWORK; + ipcp_open(unit); + ccp_open(unit); } /* @@ -221,10 +234,10 @@ auth_peer_success(unit, protocol) int bit; switch (protocol) { - case CHAP: + case PPP_CHAP: bit = CHAP_PEER; break; - case UPAP: + case PPP_PAP: bit = UPAP_PEER; break; default: @@ -240,6 +253,7 @@ auth_peer_success(unit, protocol) if ((auth_pending[unit] &= ~bit) == 0) { phase = PHASE_NETWORK; ipcp_open(unit); + ccp_open(unit); } } @@ -267,10 +281,10 @@ auth_withpeer_success(unit, protocol) int bit; switch (protocol) { - case CHAP: + case PPP_CHAP: bit = CHAP_WITHPEER; break; - case UPAP: + case PPP_PAP: bit = UPAP_WITHPEER; break; default: @@ -283,10 +297,8 @@ auth_withpeer_success(unit, protocol) * If there is no more authentication still being done, * proceed to the network phase. */ - if ((auth_pending[unit] &= ~bit) == 0) { - phase = PHASE_NETWORK; - ipcp_open(unit); - } + if ((auth_pending[unit] &= ~bit) == 0) + network_phase(unit); } @@ -379,16 +391,16 @@ check_passwd(unit, auser, userlen, apasswd, passwdlen, msg, msglen) f = fopen(filename, "r"); if (f == NULL) { if (!uselogin) { - syslog(LOG_ERR, "Can't open upap password file %s: %m", filename); + syslog(LOG_ERR, "Can't open PAP password file %s: %m", filename); ret = UPAP_AUTHNAK; } } else { check_access(f, filename); if (scan_authfile(f, user, our_name, secret, &addrs, filename) < 0 - || (secret[0] != 0 && strcmp(passwd, secret) != 0 + || (secret[0] != 0 && (cryptpap || strcmp(passwd, secret) != 0) && strcmp(crypt(passwd, secret), secret) != 0)) { - syslog(LOG_WARNING, "upap authentication failure for %s", user); + syslog(LOG_WARNING, "PAP authentication failure for %s", user); ret = UPAP_AUTHNAK; } fclose(f); @@ -397,7 +409,7 @@ check_passwd(unit, auser, userlen, apasswd, passwdlen, msg, msglen) if (uselogin && ret == UPAP_AUTHACK) { ret = login(user, passwd, msg, msglen); if (ret == UPAP_AUTHNAK) { - syslog(LOG_WARNING, "upap login failure for %s", user); + syslog(LOG_WARNING, "PAP login failure for %s", user); } } @@ -411,7 +423,7 @@ check_passwd(unit, auser, userlen, apasswd, passwdlen, msg, msglen) */ if (attempts++ >= 10) { syslog(LOG_WARNING, "%d LOGIN FAILURES ON %s, %s", - attempts, devname, user); + attempts, devnam, user); quit(); } if (attempts > 3) @@ -452,10 +464,23 @@ login(user, passwd, msg, msglen) char *epasswd; char *tty; +#ifdef HAS_SHADOW + struct spwd *spwd; + struct spwd *getspnam(); +#endif + if ((pw = getpwnam(user)) == NULL) { return (UPAP_AUTHNAK); } +#ifdef HAS_SHADOW + if ((spwd = getspnam(user)) == NULL) { + pw->pw_passwd = ""; + } else { + pw->pw_passwd = spwd->sp_pwdp; + } +#endif + /* * XXX If no passwd, let them login without one. */ @@ -463,21 +488,27 @@ login(user, passwd, msg, msglen) return (UPAP_AUTHACK); } +#ifdef HAS_SHADOW + if ((pw->pw_passwd && pw->pw_passwd[0] == '@' + && pw_auth (pw->pw_passwd+1, pw->pw_name, PW_PPP, NULL)) + || !valid (passwd, pw)) { + return (UPAP_AUTHNAK); + } +#else epasswd = crypt(passwd, pw->pw_passwd); if (strcmp(epasswd, pw->pw_passwd)) { return (UPAP_AUTHNAK); } +#endif syslog(LOG_INFO, "user %s logged in", user); /* * Write a wtmp entry for this user. */ - tty = strrchr(devname, '/'); - if (tty == NULL) - tty = devname; - else - tty++; + tty = devnam; + if (strncmp(tty, "/dev/", 5) == 0) + tty += 5; logwtmp(tty, user, ""); /* Add wtmp login entry */ logged_in = TRUE; @@ -492,11 +523,9 @@ logout() { char *tty; - tty = strrchr(devname, '/'); - if (tty == NULL) - tty = devname; - else - tty++; + tty = devnam; + if (strncmp(tty, "/dev/", 5) == 0) + tty += 5; logwtmp(tty, "", ""); /* Wipe out wtmp logout entry */ logged_in = FALSE; } @@ -688,9 +717,9 @@ get_secret(unit, client, server, secret, secret_len, save_addrs) int auth_ip_addr(unit, addr) int unit; - u_long addr; + u_int32_t addr; { - u_long a; + u_int32_t a; struct hostent *hp; struct wordlist *addrs; @@ -711,7 +740,7 @@ auth_ip_addr(unit, addr) addrs->word); continue; } else - a = *(u_long *)hp->h_addr; + a = *(u_int32_t *)hp->h_addr; } if (addr == a) return 1; @@ -726,7 +755,7 @@ auth_ip_addr(unit, addr) */ int bad_ip_adrs(addr) - u_long addr; + u_int32_t addr; { addr = ntohl(addr); return (addr >> IN_CLASSA_NSHIFT) == IN_LOOPBACKNET