X-Git-Url: https://code.citadel.org/?a=blobdiff_plain;f=citadel%2Fcitmail.c;h=bd4049008f6677c5e762307cf1a3289df0acd1b7;hb=HEAD;hp=fcaf20a263c1caf57b0a469066ef1c30fa6a1835;hpb=91930ceaf10889d1e3f0b3bf92736820d2836c18;p=citadel.git diff --git a/citadel/citmail.c b/citadel/citmail.c deleted file mode 100644 index fcaf20a26..000000000 --- a/citadel/citmail.c +++ /dev/null @@ -1,572 +0,0 @@ -/* - * citmail.c v4.2 - * $Id$ - * - * This program may be used as a local mail delivery agent, which will allow - * all Citadel users to receive Internet e-mail. To enable this functionality, - * you must tell sendmail, smail, or whatever mailer you are using, that this - * program is your local mail delivery agent. This program is a direct - * replacement for lmail, deliver, or whatever. - * - * Usage: - * - * citmail - Deliver a message - * citmail -t - Address test mode (will not deliver) - * - */ - -#include "sysdep.h" -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include "citadel.h" -#include "config.h" -#include "internetmail.h" - - -extern time_t parsedate(char *p); - - -/* message delivery classes */ -enum { - DELIVER_LOCAL, - DELIVER_REMOTE, - DELIVER_INTERNET, - DELIVER_CCITADEL -}; - - -#undef tolower -#define tolower(x) isupper(x) ? (x+'a'-'A') : x - -char *monthdesc[] = -{"Jan", "Feb", "Mar", "Apr", "May", "Jun", - "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}; - -char ALIASES[128]; -char CIT86NET[128]; -char SENDMAIL[128]; -char FALLBACK[128]; -char GW_DOMAIN[128]; -char TABLEFILE[128]; -char OUTGOING_FQDN[128]; -int RUN_NETPROC = 1; - - - -#ifndef HAVE_STRERROR -/* - * replacement strerror() for systems that don't have it - */ -char *strerror(int e) -{ - static char buf[32]; - - snprintf(buf, sizeof buf, "errno = %d", e); - return (buf); -} -#endif - -int haschar(char *st, int ch) -{ - int a, b; - b = 0; - for (a = 0; a < strlen(st); ++a) - if (st[a] == ch) - ++b; - return (b); -} - -void strip_trailing_whitespace(char *buf) -{ - while (isspace(buf[strlen(buf) - 1])) - buf[strlen(buf) - 1] = 0; -} - -/* strip leading and trailing spaces */ -void striplt(char *buf) -{ - while ((strlen(buf) > 0) && (buf[0] == 32)) - strcpy(buf, &buf[1]); - while (buf[strlen(buf) - 1] == 32) - buf[strlen(buf) - 1] = 0; -} - - -/* - * Check to see if a given FQDN really maps to a Citadel network node - */ -void host_alias(char host[]) -{ - - int a; - - /* What name is the local host known by? */ - /* if (!strcasecmp(host, config.c_fqdn)) { */ - if (IsHostLocal(host)) { - strcpy(host, config.c_nodename); - return; - } - /* Other hosts in the gateway domain? */ - for (a = 0; a < strlen(host); ++a) { - if ((host[a] == '.') && (!strcasecmp(&host[a + 1], GW_DOMAIN))) { - host[a] = 0; - for (a = 0; a < strlen(host); ++a) { - if (host[a] == '.') - host[a] = 0; - } - return; - } - } - - /* Otherwise, do nothing... */ -} - - - -/* - * Split an RFC822-style address into userid, host, and full name - */ -void process_rfc822_addr(char *rfc822, char *user, char *node, char *name) -{ - int a; - - /* extract full name - first, it's From minus */ - strcpy(name, rfc822); - for (a = 0; a < strlen(name); ++a) - if (name[a] == '<') { - do { - strcpy(&name[a], &name[a + 1]); - } while ((strlen(name) > 0) && (name[a] != '>')); - strcpy(&name[a], &name[a + 1]); - } - /* strip anything to the left of a bang */ - while ((strlen(name) > 0) && (haschar(name, '!') > 0)) - strcpy(name, &name[1]); - - /* and anything to the right of a @ or % */ - for (a = 0; a < strlen(name); ++a) { - if (name[a] == '@') - name[a] = 0; - if (name[a] == '%') - name[a] = 0; - } - - /* but if there are parentheses, that changes the rules... */ - if ((haschar(rfc822, '(') == 1) && (haschar(rfc822, ')') == 1)) { - strcpy(name, rfc822); - while ((strlen(name) > 0) && (name[0] != '(')) { - strcpy(&name[0], &name[1]); - } - strcpy(&name[0], &name[1]); - for (a = 0; a < strlen(name); ++a) - if (name[a] == ')') - name[a] = 0; - } - /* but if there are a set of quotes, that supersedes everything */ - if (haschar(rfc822, 34) == 2) { - strcpy(name, rfc822); - while ((strlen(name) > 0) && (name[0] != 34)) { - strcpy(&name[0], &name[1]); - } - strcpy(&name[0], &name[1]); - for (a = 0; a < strlen(name); ++a) - if (name[a] == 34) - name[a] = 0; - } - /* extract user id */ - strcpy(user, rfc822); - - /* first get rid of anything in parens */ - for (a = 0; a < strlen(user); ++a) - if (user[a] == '(') { - do { - strcpy(&user[a], &user[a + 1]); - } while ((strlen(user) > 0) && (user[a] != ')')); - strcpy(&user[a], &user[a + 1]); - } - /* if there's a set of angle brackets, strip it down to that */ - if ((haschar(user, '<') == 1) && (haschar(user, '>') == 1)) { - while ((strlen(user) > 0) && (user[0] != '<')) { - strcpy(&user[0], &user[1]); - } - strcpy(&user[0], &user[1]); - for (a = 0; a < strlen(user); ++a) - if (user[a] == '>') - user[a] = 0; - } - /* strip anything to the left of a bang */ - while ((strlen(user) > 0) && (haschar(user, '!') > 0)) - strcpy(user, &user[1]); - - /* and anything to the right of a @ or % */ - for (a = 0; a < strlen(user); ++a) { - if (user[a] == '@') - user[a] = 0; - if (user[a] == '%') - user[a] = 0; - } - - - - /* extract node name */ - strcpy(node, rfc822); - - /* first get rid of anything in parens */ - for (a = 0; a < strlen(node); ++a) - if (node[a] == '(') { - do { - strcpy(&node[a], &node[a + 1]); - } while ((strlen(node) > 0) && (node[a] != ')')); - strcpy(&node[a], &node[a + 1]); - } - /* if there's a set of angle brackets, strip it down to that */ - if ((haschar(node, '<') == 1) && (haschar(node, '>') == 1)) { - while ((strlen(node) > 0) && (node[0] != '<')) { - strcpy(&node[0], &node[1]); - } - strcpy(&node[0], &node[1]); - for (a = 0; a < strlen(node); ++a) - if (node[a] == '>') - node[a] = 0; - } - /* strip anything to the left of a @ */ - while ((strlen(node) > 0) && (haschar(node, '@') > 0)) - strcpy(node, &node[1]); - - /* strip anything to the left of a % */ - while ((strlen(node) > 0) && (haschar(node, '%') > 0)) - strcpy(node, &node[1]); - - /* reduce multiple system bang paths to node!user */ - while ((strlen(node) > 0) && (haschar(node, '!') > 1)) - strcpy(node, &node[1]); - - /* now get rid of the user portion of a node!user string */ - for (a = 0; a < strlen(node); ++a) - if (node[a] == '!') - node[a] = 0; - - - - /* strip leading and trailing spaces in all strings */ - striplt(user); - striplt(node); - striplt(name); -} - -/* - * Copy line by line, ending at EOF or a "." - */ -void loopcopy(FILE * to, FILE * from) -{ - char buf[1024]; - char *r; - - while (1) { - r = fgets(buf, sizeof(buf), from); - if (r == NULL) - return; - strip_trailing_whitespace(buf); - if (!strcmp(buf, ".")) - return; - fprintf(to, "%s\n", buf); - } -} - - - -/* - * pipe message through netproc - */ -void do_citmail(char recp[], int dtype) -{ - - time_t now; - FILE *temp; - int a; - int format_type = 0; - char buf[128]; - char from[512]; - char userbuf[256]; - char frombuf[256]; - char nodebuf[256]; - char destsys[256]; - char subject[256]; - long message_id = 0L; - char targetroom[256]; - char content_type[256]; - char *extra_headers = NULL; - - - if (dtype == DELIVER_REMOTE) { - - /* get the Citadel node name out of the path */ - strncpy(destsys, recp, sizeof(destsys)); - for (a = 0; a < strlen(destsys); ++a) { - if ((destsys[a] == '!') || (destsys[a] == '.')) { - destsys[a] = 0; - } - } - - /* chop the system name out, so we're left with a user */ - while (haschar(recp, '!')) - strcpy(recp, &recp[1]); - } - /* Convert underscores to spaces */ - for (a = 0; a < strlen(recp); ++a) - if (recp[a] == '_') - recp[a] = ' '; - - /* Are we delivering to a room instead of a user? */ - if (!strncasecmp(recp, "room ", 5)) { - strcpy(targetroom, &recp[5]); - strcpy(recp, ""); - } else { - strcpy(targetroom, MAILROOM); - } - - time(&now); - snprintf(from, sizeof from, "postmaster@%s", config.c_nodename); - - snprintf(buf, sizeof buf, "./network/spoolin/citmail.%d", getpid()); - temp = fopen(buf, "w"); - - strcpy(subject, ""); - strcpy(nodebuf, config.c_nodename); - strcpy(content_type, "text/plain"); - - do { - if (fgets(buf, 128, stdin) == NULL) - strcpy(buf, "."); - strip_trailing_whitespace(buf); - - if (!strncasecmp(buf, "Subject: ", 9)) - strcpy(subject, &buf[9]); - else if (!strncasecmp(buf, "Date: ", 6)) { - now = parsedate(&buf[6]); - if (now < 0L) now = time(NULL); - } - else if (!strncasecmp(buf, "From: ", 6)) - strcpy(from, &buf[6]); - else if (!strncasecmp(buf, "Content-type: ", 14)) - strcpy(content_type, &buf[14]); - else if (!strncasecmp(buf, "From ", 5)) { /* ignore */ - } else { - if (extra_headers == NULL) { - extra_headers = malloc(strlen(buf) + 2); - strcpy(extra_headers, ""); - } else { - extra_headers = realloc(extra_headers, - (strlen(extra_headers) + strlen(buf) + 2)); - } - strcat(extra_headers, buf); - strcat(extra_headers, "\n"); - } - } while ((strcmp(buf, ".")) && (strcmp(buf, ""))); - - process_rfc822_addr(from, userbuf, nodebuf, frombuf); - - if (!strncasecmp(content_type, "text/plain", 10)) - format_type = 1; /* plain ASCII message */ - else - format_type = 4; /* MIME message */ - - /* now convert it to Citadel format */ - - /* Header bytes */ - putc(255, temp); /* 0xFF = start-of-message byte */ - putc(MES_NORMAL, temp); /* Non-anonymous message */ - putc(format_type, temp); /* Format type */ - - /* Origination */ - fprintf(temp, "P%s@%s%c", userbuf, nodebuf, 0); - if (message_id) - fprintf(temp, "I%ld%c", message_id, 0); - fprintf(temp, "T%ld%c", (long)now, 0); - fprintf(temp, "A%s%c", userbuf, 0); - - /* Destination */ - if (strlen(targetroom) > 0) { - fprintf(temp, "O%s%c", targetroom, 0); - } else { - fprintf(temp, "O%s%c", MAILROOM, 0); - } - - fprintf(temp, "N%s%c", nodebuf, 0); - fprintf(temp, "H%s%c", frombuf, 0); - if (dtype == DELIVER_REMOTE) { - fprintf(temp, "D%s%c", destsys, 0); - } - if (strlen(recp) > 0) { - fprintf(temp, "R%s%c", recp, 0); - } - /* Subject and text */ - if (strlen(subject) > 0) { - fprintf(temp, "U%s%c", subject, 0); - } - putc('M', temp); - if (format_type == 4) { - fprintf(temp, "Content-type: %s\n", content_type); - if (extra_headers != NULL) - fprintf(temp, "%s", extra_headers); - fprintf(temp, "\n"); - } - if (extra_headers != NULL) - free(extra_headers); - if (strcmp(buf, ".")) - loopcopy(temp, stdin); - putc(0, temp); - fclose(temp); -} - - -void do_uudecode(char *target) -{ - static char buf[1024]; - FILE *fp; - - snprintf(buf, sizeof buf, "cd %s; uudecode", target); - - fp = popen(buf, "w"); - if (fp == NULL) - return; - while (fgets(buf, 1024, stdin) != NULL) { - fprintf(fp, "%s", buf); - } - pclose(fp); - -} - -int alias(char *name) -{ - FILE *fp; - int a; - char abuf[256]; - - fp = fopen(ALIASES, "r"); - if (fp == NULL) { - syslog(LOG_ERR, "cannot open %s: %s", ALIASES, strerror(errno)); - return (2); - } - while (fgets(abuf, 256, fp) != NULL) { - strip_trailing_whitespace(abuf); - for (a = 0; a < strlen(abuf); ++a) { - if (abuf[a] == ',') { - abuf[a] = 0; - if (!strcasecmp(name, abuf)) { - strcpy(name, &abuf[a + 1]); - } - } - } - } - fclose(fp); - return (0); -} - - -void deliver(char recp[], int is_test, int deliver_to_ignet) -{ - - /* various ways we can deliver mail... */ - - if (deliver_to_ignet) { - syslog(LOG_NOTICE, "to Citadel network user %s", recp); - if (is_test == 0) - do_citmail(recp, DELIVER_REMOTE); - } else if (!strcmp(recp, "uudecode")) { - syslog(LOG_NOTICE, "uudecoding to bit bucket directory"); - if (is_test == 0) - do_uudecode(config.c_bucket_dir); - } else if (!strcmp(recp, "cit86net")) { - syslog(LOG_NOTICE, "uudecoding to Cit86net spool"); - if (is_test == 0) { - do_uudecode(CIT86NET); - system("exec ./BatchTranslate86"); - } - } else if (!strcmp(recp, "null")) { - syslog(LOG_NOTICE, "zapping nulled message"); - } else { - /* Otherwise, the user is local (or an unknown name was - * specified, in which case we let netproc handle the bounce) - */ - syslog(LOG_NOTICE, "to Citadel recipient %s", recp); - if (is_test == 0) - do_citmail(recp, DELIVER_LOCAL); - } - -} - - - -int main(int argc, char **argv) -{ - int is_test = 0; - int deliver_to_ignet = 0; - static char recp[1024], buf[1024]; - static char user[1024], node[1024], name[1024]; - int a; - - openlog("citmail", LOG_PID, LOG_USER); - get_config(); - LoadInternetConfig(); - - if (!strcmp(argv[1], "-t")) { - is_test = 1; - syslog(LOG_NOTICE, "test mode - will not deliver"); - } - if (is_test == 0) { - strcpy(recp, argv[1]); - } else { - strcpy(recp, argv[2]); - } - -/*** Non-SMTP delivery mode ***/ - syslog(LOG_NOTICE, "recp: %s", recp); - for (a = 0; a < 2; ++a) { - alias(recp); - } - - /* did we alias it back to a remote address? */ - if ((haschar(recp, '%')) - || (haschar(recp, '@')) - || (haschar(recp, '!'))) { - - process_rfc822_addr(recp, user, node, name); - host_alias(node); - - /* If there are dots, it's an Internet host, so feed it - * back to an external mail transport agent such as sendmail. - */ - if (haschar(node, '.')) { - snprintf(buf, sizeof buf, SENDMAIL, recp); - system(buf); - exit(0); - } - /* Otherwise, we're dealing with Citadel mail. */ - else { - snprintf(recp, sizeof recp, "%s!%s", node, user); - deliver_to_ignet = 1; - } - - } - deliver(recp, is_test, deliver_to_ignet); - - if (RUN_NETPROC) { - syslog(LOG_NOTICE, "running netproc"); - if (system("/bin/true") != 0) { - syslog(LOG_ERR, "netproc failed: %s", strerror(errno)); - } - } else { - syslog(LOG_NOTICE, "skipping netproc"); - } - exit(0); -}