diff options
author | Karl Ramm <kcr@1ts.org> | 2010-11-06 18:50:05 +0000 |
---|---|---|
committer | Karl Ramm <kcr@1ts.org> | 2010-11-06 18:50:05 +0000 |
commit | 7d0269270f7b40b5f8d7629cf3f5f796fc51c63c (patch) | |
tree | e3ac845dff228a27be87e3e779c4eaced5443cf1 | |
parent | c4d02402a62cf3b863be207630abc00d0258ab84 (diff) |
clean up realm_sendit_auth
-rw-r--r-- | server/realm.c | 222 |
1 files changed, 106 insertions, 116 deletions
diff --git a/server/realm.c b/server/realm.c index b842a2d..225bbae 100644 --- a/server/realm.c +++ b/server/realm.c @@ -1057,6 +1057,40 @@ realm_dump_realms(FILE *fp) } #ifdef HAVE_KRB5 + +static Code_t +realm_auth_sendit_nacked(char *buffer, ZRealm *realm, + ZUnique_Id_t uid, int ack_to_sender, + struct sockaddr_in *who) +{ + Unacked *nacked; + + nacked = (Unacked *) malloc(sizeof(Unacked)); + if (nacked == NULL) + return ENOMEM; + + nacked->rexmits = 0; + nacked->packet = buffer; + nacked->dest.rlm.rlm_idx = realm - otherrealms; + nacked->dest.rlm.rlm_srv_idx = realm->idx; + nacked->packsz = sizeof(ZPacket_t); + nacked->uid = uid; + + /* Do the ack for the last frag, below */ + if (ack_to_sender) + nacked->ack_addr = *who; + else + nacked->ack_addr.sin_addr.s_addr = 0; + + /* set a timer to retransmit */ + nacked->timer = timer_set_rel(rexmit_times[0], rlm_rexmit, nacked); + + /* chain in */ + Unacked_insert(&rlm_nacklist, nacked); + + return ZERR_NONE; +} + static Code_t realm_sendit_auth(ZNotice_t *notice, struct sockaddr_in *who, @@ -1064,41 +1098,36 @@ realm_sendit_auth(ZNotice_t *notice, ZRealm *realm, int ack_to_sender) { - char *buffer, *ptr; - int buffer_len, hdrlen, offset, fragsize, message_len; + char *buffer = NULL; + int hdrlen, offset, fragsize, message_len; int origoffset, origlen; Code_t retval; - Unacked *nacked; char multi[64]; ZNotice_t partnotice, newnotice; offset = 0; - buffer = (char *) malloc(sizeof(ZPacket_t)); + buffer = (char *)malloc(sizeof(ZPacket_t)); if (!buffer) { - syslog(LOG_ERR, "realm_sendit_auth malloc"); - return ENOMEM; /* DON'T put on nack list */ + syslog(LOG_ERR, "realm_sendit_auth malloc"); + return ENOMEM; /* DON'T put on nack list */ } - buffer_len = sizeof(ZPacket_t); - newnotice = *notice; hdrlen = 0; - retval = ZMakeZcodeRealmAuthentication(&newnotice, buffer, buffer_len, + retval = ZMakeZcodeRealmAuthentication(&newnotice, buffer, sizeof(ZPacket_t), &hdrlen, realm->name); - if (retval != ZERR_NONE) { - syslog(LOG_WARNING, "rlm_sendit_auth make zcksum: %s", + if (retval) + syslog(LOG_WARNING, + "rlm_sendit_auth: ZMakeZcodeRealmAuthentication: %s", error_message(retval)); - return (retval); - } - /* set the dest addr */ - retval = ZSetDestAddr(&realm->addrs[realm->idx]); - if (retval != ZERR_NONE) { - syslog(LOG_WARNING, "rlm_sendit_auth set addr: %s", - error_message(retval)); - return (retval); + if (!retval) { + retval = ZSetDestAddr(&realm->addrs[realm->idx]); + if (retval) + syslog(LOG_WARNING, "rlm_sendit_auth: ZSetDestAddr: %s", + error_message(retval)); } /* This is not terribly pretty, but it does do its job. @@ -1110,11 +1139,13 @@ realm_sendit_auth(ZNotice_t *notice, * but only the server uses it. */ - if ((notice->z_message_len+hdrlen > buffer_len) || - (notice->z_message_len+hdrlen > Z_MAXPKTLEN)) { + if (!retval && + ((notice->z_message_len+hdrlen > sizeof(ZPacket_t)) || + (notice->z_message_len+hdrlen > Z_MAXPKTLEN))) { /* Reallocate buffers inside the refragmenter */ free(buffer); + buffer = NULL; partnotice = *notice; @@ -1124,144 +1155,103 @@ realm_sendit_auth(ZNotice_t *notice, if (notice->z_multinotice && strcmp(notice->z_multinotice, "")) { if (sscanf(notice->z_multinotice, "%d/%d", &origoffset, &origlen) != 2) { - syslog(LOG_WARNING, "rlm_sendit_auth frag: parse failed"); - return ZERR_BADFIELD; + syslog(LOG_WARNING, + "rlm_sendit_auth frag: multinotice parse failed"); + retval = ZERR_BADFIELD; } } fragsize = Z_MAXPKTLEN - hdrlen - Z_FRAGFUDGE; if (fragsize < 0) - return ZERR_HEADERLEN; + retval = ZERR_HEADERLEN; - while (offset < notice->z_message_len || !notice->z_message_len) { - (void) sprintf(multi, "%d/%d", offset+origoffset, origlen); + while (!retval && + (offset < notice->z_message_len || !notice->z_message_len)) { + (void)sprintf(multi, "%d/%d", offset+origoffset, origlen); partnotice.z_multinotice = multi; if (offset > 0) { - (void) Z_gettimeofday(&partnotice.z_uid.tv, + (void)Z_gettimeofday(&partnotice.z_uid.tv, (struct timezone *)0); partnotice.z_uid.tv.tv_sec = htonl((u_long) partnotice.z_uid.tv.tv_sec); partnotice.z_uid.tv.tv_usec = htonl((u_long) partnotice.z_uid.tv.tv_usec); - (void) memcpy((char *)&partnotice.z_uid.zuid_addr, &__My_addr, + (void)memcpy((char *)&partnotice.z_uid.zuid_addr, &__My_addr, sizeof(__My_addr)); partnotice.z_sender_sockaddr.ip4.sin_family = AF_INET; /* XXX */ - (void) memcpy((char *)&partnotice.z_sender_sockaddr.ip4.sin_addr, + (void)memcpy((char *)&partnotice.z_sender_sockaddr.ip4.sin_addr, &__My_addr, sizeof(__My_addr)); } message_len = min(notice->z_message_len-offset, fragsize); partnotice.z_message = notice->z_message+offset; partnotice.z_message_len = message_len; - buffer = (char *) malloc(sizeof(ZPacket_t)); + buffer = (char *)malloc(sizeof(ZPacket_t)); if (!buffer) { syslog(LOG_ERR, "realm_sendit_auth malloc"); - return ENOMEM; /* DON'T put on nack list */ + retval = ENOMEM; /* DON'T put on nack list */ } - buffer_len = sizeof(ZPacket_t); - - retval = ZMakeZcodeRealmAuthentication(&partnotice, buffer, - buffer_len, &hdrlen, - realm->name); - if (retval != ZERR_NONE) { - syslog(LOG_WARNING, "rlm_sendit_auth set addr: %s", - error_message(retval)); - free(buffer); - return (retval); + if (!retval) { + retval = ZMakeZcodeRealmAuthentication(&partnotice, buffer, + sizeof(ZPacket_t), + &hdrlen, + realm->name); + if (retval != ZERR_NONE) + syslog(LOG_WARNING, "rlm_sendit_auth set addr: %s", + error_message(retval)); } - ptr = buffer+hdrlen; - - (void) memcpy(ptr, partnotice.z_message, partnotice.z_message_len); - - buffer_len = hdrlen+partnotice.z_message_len; + if (!retval) { + (void) memcpy(buffer + hdrlen, partnotice.z_message, + partnotice.z_message_len); - /* now send */ - if ((retval = ZSendPacket(buffer, buffer_len, 0)) != ZERR_NONE) { - syslog(LOG_WARNING, "rlm_sendit_auth xmit: %s", - error_message(retval)); - free(buffer); - return(retval); + retval = ZSendPacket(buffer, + hdrlen + partnotice.z_message_len, 0); + if (retval) + syslog(LOG_WARNING, "rlm_sendit_auth xmit: %s", + error_message(retval)); } - if (!(nacked = (Unacked *)malloc(sizeof(Unacked)))) { - /* no space: just punt */ - syslog(LOG_ERR, "rlm_sendit_auth nack malloc"); - free(buffer); - return ENOMEM; + if (!retval) { + retval = realm_auth_sendit_nacked(buffer, realm, + partnotice.z_uid, + ack_to_sender, who); + if (retval) /* no space: just punt */ + syslog(LOG_ERR, + "rlm_sendit_auth: realm_auth_sendit_nacked: %s", + error_message(retval)); } - nacked->rexmits = 0; - nacked->packet = buffer; - nacked->dest.rlm.rlm_idx = realm - otherrealms; - nacked->dest.rlm.rlm_srv_idx = realm->idx; - nacked->packsz = buffer_len; - nacked->uid = partnotice.z_uid; - - /* Do the ack for the last frag, below */ - if (ack_to_sender) - nacked->ack_addr = *who; - else - nacked->ack_addr.sin_addr.s_addr = 0; - - /* set a timer to retransmit */ - nacked->timer = timer_set_rel(rexmit_times[0], rlm_rexmit, nacked); - - /* chain in */ - Unacked_insert(&rlm_nacklist, nacked); - - offset += fragsize; + if (!retval) + offset += fragsize; if (!notice->z_message_len) break; } - } - else { + } else if (!retval) { /* This is easy, no further fragmentation needed */ - ptr = buffer+hdrlen; - - (void) memcpy(ptr, newnotice.z_message, newnotice.z_message_len); + (void)memcpy(buffer + hdrlen, newnotice.z_message, + newnotice.z_message_len); - buffer_len = hdrlen+newnotice.z_message_len; - - /* now send */ - if ((retval = ZSendPacket(buffer, buffer_len, 0)) != ZERR_NONE) { + retval = ZSendPacket(buffer, hdrlen + newnotice.z_message_len, 0); + if (retval) syslog(LOG_WARNING, "rlm_sendit_auth xmit: %s", error_message(retval)); - free(buffer); - return(retval); - } - - /* now we've sent it, mark it as not ack'ed */ - - if (!(nacked = (Unacked *)malloc(sizeof(Unacked)))) { - /* no space: just punt */ - syslog(LOG_ERR, "rlm_sendit_auth nack malloc"); - free(buffer); - return 0; + else { + retval = realm_auth_sendit_nacked(buffer, realm, + partnotice.z_uid, + ack_to_sender, who); + if (retval) /* no space: just punt */ + syslog(LOG_ERR, "rlm_sendit_auth: realm_auth_sendit_nacked: %s", + error_message(retval)); } - - nacked->rexmits = 0; - nacked->packet = buffer; - nacked->dest.rlm.rlm_idx = realm - otherrealms; - nacked->dest.rlm.rlm_srv_idx = realm->idx; - nacked->packsz = buffer_len; - nacked->uid = notice->z_uid; - - /* Do the ack for the last frag, below */ - if (ack_to_sender) - nacked->ack_addr = *who; - else - nacked->ack_addr.sin_addr.s_addr = 0; - - /* set a timer to retransmit */ - nacked->timer = timer_set_rel(rexmit_times[0], rlm_rexmit, nacked); - /* chain in */ - Unacked_insert(&rlm_nacklist, nacked); } - return 0; + + if (retval && buffer != NULL) + free(buffer); + return retval; } static int |