X-Git-Url: https://git.exim.org/exim.git/blobdiff_plain/8523533c08c018ac4b750b0e0fab6cfe611e8a49..21eb6e72d6d616a6430e1346e085b7cc74298f88:/src/src/spool_in.c diff --git a/src/src/spool_in.c b/src/src/spool_in.c index 55d78b957..a24079dc4 100644 --- a/src/src/spool_in.c +++ b/src/src/spool_in.c @@ -1,10 +1,10 @@ -/* $Cambridge: exim/src/src/spool_in.c,v 1.2 2004/12/16 15:11:47 tom Exp $ */ +/* $Cambridge: exim/src/src/spool_in.c,v 1.18 2006/10/24 15:01:26 ph10 Exp $ */ /************************************************* * Exim - an Internet mail transport agent * *************************************************/ -/* Copyright (c) University of Cambridge 1995 - 2004 */ +/* Copyright (c) University of Cambridge 1995 - 2006 */ /* See the file NOTICE for conditions of use and distribution. */ /* Functions for reading spool files. When compiling for a utility (eximon), @@ -76,7 +76,7 @@ an open file descriptor (at least, I think that's the Cygwin story). On real Unix systems it doesn't make any difference as long as Exim is consistent in what it locks. */ -fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) | +(void)fcntl(deliver_datafile, F_SETFD, fcntl(deliver_datafile, F_GETFD) | FD_CLOEXEC); lock_data.l_type = F_WRLCK; @@ -89,7 +89,7 @@ if (fcntl(deliver_datafile, F_SETLK, &lock_data) < 0) log_write(L_skip_delivery, LOG_MAIN, "Spool file is locked (another process is handling this message)"); - close(deliver_datafile); + (void)close(deliver_datafile); deliver_datafile = -1; errno = 0; return FALSE; @@ -230,14 +230,13 @@ int n; int rcount = 0; long int uid, gid; BOOL inheader = FALSE; -uschar originator[64]; +uschar *p; /* Reset all the global variables to their default values. However, there is one exception. DO NOT change the default value of dont_deliver, because it may be forced by an external setting. */ -for (n = 0; n < ACL_C_MAX + ACL_M_MAX; n++) acl_var[n] = NULL; - +acl_var_c = acl_var_m = NULL; authenticated_id = NULL; authenticated_sender = NULL; allow_unqualified_recipient = FALSE; @@ -250,6 +249,7 @@ deliver_frozen_at = 0; deliver_manual_thaw = FALSE; /* dont_deliver must NOT be reset */ header_list = header_last = NULL; +host_lookup_deferred = FALSE; host_lookup_failed = FALSE; interface_address = NULL; interface_port = 0; @@ -269,6 +269,7 @@ sender_host_authenticated = NULL; sender_ident = NULL; sender_local = FALSE; sender_set_untrusted = FALSE; +smtp_active_hostname = primary_hostname; tree_nonrecipients = NULL; #ifdef EXPERIMENTAL_BRIGHTMAIL @@ -276,6 +277,10 @@ bmi_run = 0; bmi_verdicts = NULL; #endif +#ifdef EXPERIMENTAL_DOMAINKEYS +dk_do_verify = 0; +#endif + #ifdef SUPPORT_TLS tls_certificate_verified = FALSE; tls_cipher = NULL; @@ -283,7 +288,6 @@ tls_peerdn = NULL; #endif #ifdef WITH_CONTENT_SCAN -fake_reject = FALSE; spam_score_int = NULL; #endif @@ -318,15 +322,28 @@ if (Ustrlen(big_buffer) != MESSAGE_ID_LENGTH + 3 || /* The next three lines in the header file are in a fixed format. The first contains the login, uid, and gid of the user who caused the file to be written. -The second contains the mail address of the message's sender, enclosed in <>. -The third contains the time the message was received, and the number of warning -messages for delivery delays that have been sent. */ +There are known cases where a negative gid is used, so we allow for both +negative uids and gids. The second contains the mail address of the message's +sender, enclosed in <>. The third contains the time the message was received, +and the number of warning messages for delivery delays that have been sent. */ if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; -if (sscanf(CS big_buffer, "%s %ld %ld", originator, &uid, &gid) != 3) - goto SPOOL_FORMAT_ERROR; -originator_login = string_copy(originator); +p = big_buffer + Ustrlen(big_buffer); +while (p > big_buffer && isspace(p[-1])) p--; +*p = 0; +if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR; +while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--; +gid = Uatoi(p); +if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR; +*p = 0; +if (!isdigit(p[-1])) goto SPOOL_FORMAT_ERROR; +while (p > big_buffer && (isdigit(p[-1]) || '-' == p[-1])) p--; +uid = Uatoi(p); +if (p <= big_buffer || *(--p) != ' ') goto SPOOL_FORMAT_ERROR; +*p = 0; + +originator_login = string_copy(big_buffer); originator_uid = (uid_t)uid; originator_gid = (gid_t)gid; @@ -351,113 +368,190 @@ DEBUG(D_deliver) debug_printf("user=%s uid=%ld gid=%ld sender=%s\n", sender_address); #endif /* COMPILE_UTILITY */ -/* Now there may be a number of optional lines, each starting with "-". -If you add a new setting here, make sure you set the default above. */ +/* Now there may be a number of optional lines, each starting with "-". If you +add a new setting here, make sure you set the default above. +Because there are now quite a number of different possibilities, we use a +switch on the first character to avoid too many failing tests. Thanks to Nico +Erfurth for the patch that implemented this. I have made it even more efficient +by not re-scanning the first two characters. + +To allow new versions of Exim that add additional flags to interwork with older +versions that do not understand them, just ignore any lines starting with "-" +that we don't recognize. Otherwise it wouldn't be possible to back off a new +version that left new-style flags written on the spool. */ + +p = big_buffer + 2; for (;;) { if (Ufgets(big_buffer, big_buffer_size, f) == NULL) goto SPOOL_READ_ERROR; if (big_buffer[0] != '-') break; - big_buffer[Ustrlen(big_buffer) - 1] = 0; - if (Ustrncmp(big_buffer, "-acl ", 5) == 0) + + switch(big_buffer[1]) { - int index, count; - if (sscanf(CS big_buffer + 5, "%d %d", &index, &count) != 2) - goto SPOOL_FORMAT_ERROR; - /* Ignore if index too big - might be if a later release with more - variables built this spool file. */ - if (index < ACL_C_MAX + ACL_M_MAX) + case 'a': + + /* Nowadays we use "-aclc" and "-aclm" for the different types of ACL + variable, because Exim allows any number of them, with arbitrary names. + The line in the spool file is "-acl[cm] ". The name excludes + the c or m. */ + + if (Ustrncmp(p, "clc ", 4) == 0 || + Ustrncmp(p, "clm ", 4) == 0) { - acl_var[index] = store_get(count + 1); - if (fread(acl_var[index], 1, count+1, f) < count) goto SPOOL_READ_ERROR; - acl_var[index][count] = 0; + uschar *name, *endptr; + int count; + tree_node *node; + endptr = Ustrchr(big_buffer + 6, ' '); + if (endptr == NULL) goto SPOOL_FORMAT_ERROR; + name = string_sprintf("%c%.*s", big_buffer[4], endptr - big_buffer - 6, + big_buffer + 6); + if (sscanf(CS endptr, " %d", &count) != 1) goto SPOOL_FORMAT_ERROR; + node = acl_var_create(name); + node->data.ptr = store_get(count + 1); + if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR; + ((uschar*)node->data.ptr)[count] = 0; } - } - else if (Ustrcmp(big_buffer, "-local") == 0) sender_local = TRUE; - else if (Ustrcmp(big_buffer, "-localerror") == 0) - local_error_message = TRUE; - else if (Ustrncmp(big_buffer, "-local_scan ", 12) == 0) - local_scan_data = string_copy(big_buffer + 12); -#ifdef WITH_CONTENT_SCAN - else if (Ustrncmp(big_buffer, "-spam_score_int ", 16) == 0) - spam_score_int = string_copy(big_buffer + 16); -#endif -#ifdef EXPERIMENTAL_BRIGHTMAIL - else if (Ustrncmp(big_buffer, "-bmi_verdicts ", 14) == 0) - bmi_verdicts = string_copy(big_buffer + 14); -#endif - else if (Ustrcmp(big_buffer, "-host_lookup_failed") == 0) - host_lookup_failed = TRUE; - else if (Ustrncmp(big_buffer, "-body_linecount", 15) == 0) - body_linecount = Uatoi(big_buffer + 15); - else if (Ustrncmp(big_buffer, "-body_zerocount", 15) == 0) - body_zerocount = Uatoi(big_buffer + 15); - else if (Ustrncmp(big_buffer, "-frozen", 7) == 0) - { - deliver_freeze = TRUE; - deliver_frozen_at = Uatoi(big_buffer + 7); - } - else if (Ustrcmp(big_buffer, "-allow_unqualified_recipient") == 0) - allow_unqualified_recipient = TRUE; - else if (Ustrcmp(big_buffer, "-allow_unqualified_sender") == 0) - allow_unqualified_sender = TRUE; - else if (Ustrcmp(big_buffer, "-deliver_firsttime") == 0) - deliver_firsttime = TRUE; - else if (Ustrcmp(big_buffer, "-manual_thaw") == 0) - deliver_manual_thaw = TRUE; - else if (Ustrncmp(big_buffer, "-auth_id", 8) == 0) - authenticated_id = string_copy(big_buffer + 9); - else if (Ustrncmp(big_buffer, "-auth_sender", 12) == 0) - authenticated_sender = string_copy(big_buffer + 13); - else if (Ustrncmp(big_buffer, "-sender_set_untrusted", 21) == 0) - sender_set_untrusted = TRUE; - - #ifdef SUPPORT_TLS - else if (Ustrncmp(big_buffer, "-tls_certificate_verified", 25) == 0) - tls_certificate_verified = TRUE; - else if (Ustrncmp(big_buffer, "-tls_cipher", 11) == 0) - tls_cipher = string_copy(big_buffer + 12); - else if (Ustrncmp(big_buffer, "-tls_peerdn", 11) == 0) - tls_peerdn = string_copy(big_buffer + 12); - #endif - - /* We now record the port number after the address, separated by a - dot. For compatibility during upgrading, do nothing if there - isn't a value (it gets left at zero). */ - - else if (Ustrncmp(big_buffer, "-host_address", 13) == 0) - { - sender_host_port = host_extract_port(big_buffer + 14); - sender_host_address = string_copy(big_buffer + 14); - } - else if (Ustrncmp(big_buffer, "-interface_address", 18) == 0) - { - interface_port = host_extract_port(big_buffer + 19); - interface_address = string_copy(big_buffer + 19); - } + else if (Ustrcmp(p, "llow_unqualified_recipient") == 0) + allow_unqualified_recipient = TRUE; + else if (Ustrcmp(p, "llow_unqualified_sender") == 0) + allow_unqualified_sender = TRUE; + + else if (Ustrncmp(p, "uth_id", 6) == 0) + authenticated_id = string_copy(big_buffer + 9); + else if (Ustrncmp(p, "uth_sender", 10) == 0) + authenticated_sender = string_copy(big_buffer + 13); + else if (Ustrncmp(p, "ctive_hostname", 14) == 0) + smtp_active_hostname = string_copy(big_buffer + 17); + + /* For long-term backward compatibility, we recognize "-acl", which was + used before the number of ACL variables changed from 10 to 20. This was + before the subsequent change to an arbitrary number of named variables. + This code is retained so that upgrades from very old versions can still + handle old-format spool files. The value given after "-acl" is a number + that is 0-9 for connection variables, and 10-19 for message variables. */ + + else if (Ustrncmp(p, "cl ", 3) == 0) + { + int index, count; + uschar name[20]; /* Need plenty of space for %d format */ + tree_node *node; + if (sscanf(CS big_buffer + 5, "%d %d", &index, &count) != 2) + goto SPOOL_FORMAT_ERROR; + if (index < 10) + (void) string_format(name, sizeof(name), "%c%d", 'c', index); + else if (index < 20) /* ignore out-of-range index */ + (void) string_format(name, sizeof(name), "%c%d", 'm', index - 10); + node = acl_var_create(name); + node->data.ptr = store_get(count + 1); + if (fread(node->data.ptr, 1, count+1, f) < count) goto SPOOL_READ_ERROR; + ((uschar*)node->data.ptr)[count] = 0; + } + break; + + case 'b': + if (Ustrncmp(p, "ody_linecount", 13) == 0) + body_linecount = Uatoi(big_buffer + 15); + else if (Ustrncmp(p, "ody_zerocount", 13) == 0) + body_zerocount = Uatoi(big_buffer + 15); + #ifdef EXPERIMENTAL_BRIGHTMAIL + else if (Ustrncmp(p, "mi_verdicts ", 12) == 0) + bmi_verdicts = string_copy(big_buffer + 14); + #endif + break; + + case 'd': + if (Ustrcmp(p, "eliver_firsttime") == 0) + deliver_firsttime = TRUE; + break; + + case 'f': + if (Ustrncmp(p, "rozen", 5) == 0) + { + deliver_freeze = TRUE; + deliver_frozen_at = Uatoi(big_buffer + 7); + } + break; + + case 'h': + if (Ustrcmp(p, "ost_lookup_deferred") == 0) + host_lookup_deferred = TRUE; + else if (Ustrcmp(p, "ost_lookup_failed") == 0) + host_lookup_failed = TRUE; + else if (Ustrncmp(p, "ost_auth", 8) == 0) + sender_host_authenticated = string_copy(big_buffer + 11); + else if (Ustrncmp(p, "ost_name", 8) == 0) + sender_host_name = string_copy(big_buffer + 11); + else if (Ustrncmp(p, "elo_name", 8) == 0) + sender_helo_name = string_copy(big_buffer + 11); + + /* We now record the port number after the address, separated by a + dot. For compatibility during upgrading, do nothing if there + isn't a value (it gets left at zero). */ + + else if (Ustrncmp(p, "ost_address", 11) == 0) + { + sender_host_port = host_address_extract_port(big_buffer + 14); + sender_host_address = string_copy(big_buffer + 14); + } + break; - else if (Ustrncmp(big_buffer, "-host_auth", 10) == 0) - sender_host_authenticated = string_copy(big_buffer + 11); - else if (Ustrncmp(big_buffer, "-host_name", 10) == 0) - sender_host_name = string_copy(big_buffer + 11); - else if (Ustrncmp(big_buffer, "-helo_name", 10) == 0) - sender_helo_name = string_copy(big_buffer + 11); - else if (Ustrncmp(big_buffer, "-ident", 6) == 0) - sender_ident = string_copy(big_buffer + 7); - else if (Ustrncmp(big_buffer, "-received_protocol", 18) == 0) - received_protocol = string_copy(big_buffer + 19); - else if (Ustrncmp(big_buffer, "-N", 2) == 0) - dont_deliver = TRUE; - - /* To allow new versions of Exim that add additional flags to interwork - with older versions that do not understand them, just ignore any flagged - lines that we don't recognize. Otherwise it wouldn't be possible to back - off a new version that left new-style flags written on the spool. That's - why the following line is commented out. */ - - /* else goto SPOOL_FORMAT_ERROR; */ + case 'i': + if (Ustrncmp(p, "nterface_address", 16) == 0) + { + interface_port = host_address_extract_port(big_buffer + 19); + interface_address = string_copy(big_buffer + 19); + } + else if (Ustrncmp(p, "dent", 4) == 0) + sender_ident = string_copy(big_buffer + 7); + break; + + case 'l': + if (Ustrcmp(p, "ocal") == 0) sender_local = TRUE; + else if (Ustrcmp(big_buffer, "-localerror") == 0) + local_error_message = TRUE; + else if (Ustrncmp(p, "ocal_scan ", 10) == 0) + local_scan_data = string_copy(big_buffer + 12); + break; + + case 'm': + if (Ustrcmp(p, "anual_thaw") == 0) deliver_manual_thaw = TRUE; + break; + + case 'N': + if (*p == 0) dont_deliver = TRUE; /* -N */ + break; + + case 'r': + if (Ustrncmp(p, "eceived_protocol", 16) == 0) + received_protocol = string_copy(big_buffer + 19); + break; + + case 's': + if (Ustrncmp(p, "ender_set_untrusted", 19) == 0) + sender_set_untrusted = TRUE; + #ifdef WITH_CONTENT_SCAN + else if (Ustrncmp(p, "pam_score_int ", 14) == 0) + spam_score_int = string_copy(big_buffer + 16); + #endif + break; + + #ifdef SUPPORT_TLS + case 't': + if (Ustrncmp(p, "ls_certificate_verified", 23) == 0) + tls_certificate_verified = TRUE; + else if (Ustrncmp(p, "ls_cipher", 9) == 0) + tls_cipher = string_copy(big_buffer + 12); + else if (Ustrncmp(p, "ls_peerdn", 9) == 0) + tls_peerdn = string_copy(big_buffer + 12); + break; + #endif + + default: /* Present because some compilers complain if all */ + break; /* possibilities are not covered. */ + } } /* Build sender_fullhost if required */ @@ -559,7 +653,7 @@ for (recipients_count = 0; recipients_count < rcount; recipients_count++) if (*p == ' ') { *p++ = 0; - sscanf(CS p, "%d,%d", &dummy, &pno); + (void)sscanf(CS p, "%d,%d", &dummy, &pno); } } @@ -568,7 +662,7 @@ for (recipients_count = 0; recipients_count < rcount; recipients_count++) else if (*p == ' ') { *p++ = 0; - sscanf(CS p, "%d", &pno); + (void)sscanf(CS p, "%d", &pno); } /* Handle current format Exim 4 spool files */ @@ -576,13 +670,13 @@ for (recipients_count = 0; recipients_count < rcount; recipients_count++) else if (*p == '#') { int flags; - sscanf(CS p+1, "%d", &flags); + (void)sscanf(CS p+1, "%d", &flags); if ((flags & 0x01) != 0) /* one_time data exists */ { int len; while (isdigit(*(--p)) || *p == ',' || *p == '-'); - sscanf(CS p+1, "%d,%d", &len, &pno); + (void)sscanf(CS p+1, "%d,%d", &len, &pno); *p = 0; if (len > 0) { @@ -618,8 +712,8 @@ while ((n = fgetc(f)) != EOF) int i; if (!isdigit(n)) goto SPOOL_FORMAT_ERROR; - ungetc(n, f); - fscanf(f, "%d%c ", &n, flag); + (void)ungetc(n, f); + (void)fscanf(f, "%d%c ", &n, flag); if (flag[0] != '*') message_size += n; /* Omit non-transmitted headers */ if (read_headers)