X-Git-Url: http://git.marmaro.de/?p=mmh;a=blobdiff_plain;f=sbr%2Fmts.c;h=b52740df5608ca25aa02e9a32551f9806a192fc3;hp=7610cdaf143ddb36ec1422f997dedd6fd45a3455;hb=88b2142594d5ea1e8385dae5eca81eed1018c555;hpb=352fe458a57061db81240c19fa4b356c7448463b diff --git a/sbr/mts.c b/sbr/mts.c index 7610cda..b52740d 100644 --- a/sbr/mts.c +++ b/sbr/mts.c @@ -1,567 +1,155 @@ - /* - * mts.c -- definitions for the mail transport system - * - * $Id$ - * - * This code is Copyright (c) 2002, by the authors of nmh. See the - * COPYRIGHT file in the root directory of the nmh distribution for - * complete copyright information. - */ +** mts.c -- definitions for the mail transport system +** +** This code is Copyright (c) 2002, by the authors of nmh. See the +** COPYRIGHT file in the root directory of the nmh distribution for +** complete copyright information. +*/ #include /* for snprintf() */ -#include #include - -#define nmhetcdir(file) NMHETCDIR#file - #include #include -#include #include +#include #include - -#ifdef HAVE_SYS_UTSNAME_H -# include -#endif - -#define NOTOK (-1) -#define OK 0 - -/* - * static prototypes - */ -static char *tailor_value (unsigned char *); -static void getuserinfo (void); -static const char *get_mtsconf_pathname(void); -static const char *get_mtsuserconf_pathname(void); -static void mts_read_conf_file (FILE *fp); +#include /* - * *mmdfldir and *uucpldir are the maildrop directories. If maildrops - * are kept in the user's home directory, then these should be empty - * strings. In this case, the appropriate ...lfil array should contain - * the name of the file in the user's home directory. Usually, this is - * something like ".mail". - */ - -/* - * nmh mail transport interface customization file - */ -static char *mtsconf = nmhetcdir(/mts.conf); - -static char *localname = ""; -static char *localdomain = ""; -static char *systemname = ""; - -char *mmdfldir = MAILSPOOL; -char *mmdflfil = ""; -char *uucpldir = "/usr/spool/mail"; -char *uucplfil = ""; - -char *mmdlm1 = "\001\001\001\001\n"; -char *mmdlm2 = "\001\001\001\001\n"; +** static prototypes +*/ +static void getuserinfo(void); /* Cache the username and fullname of the user */ static char username[BUFSIZ]; static char fullname[BUFSIZ]; -/* Variables for username masquerading: */ - boolean draft_from_masquerading = FALSE; /* also used from post.c */ -static boolean mmailid_masquerading = FALSE; - boolean username_extension_masquerading = FALSE; /* " from addrsbr.c */ -static char* masquerade = ""; - -/* - * MTS specific variables - */ -#if defined(SMTPMTS) -static char *sm_method = "smtp"; -int sm_mts = MTS_SMTP; -char *hostable = nmhetcdir(/hosts); -char *sendmail = SENDMAILPATH; -#endif - -/* - * SMTP/POP stuff - */ -char *clientname = NULL; -char *servers = "localhost \01localnet"; -char *pophost = ""; - -/* - * BBoards-specific variables - */ -char *bb_domain = ""; - - -/* - * POP BBoards-specific variables - */ -#ifdef BPOP -char *popbbhost = ""; -char *popbbuser = ""; -char *popbblist = nmhetcdir(/hosts.popbb); -#endif /* BPOP */ - -/* - * Global MailDelivery file - */ -char *maildelivery = nmhetcdir(/maildelivery); - - -/* - * Aliasing Facility (doesn't belong here) - */ -int Everyone = NOTOK; -static char *everyone = "-1"; -char *NoShell = ""; - -/* - * Customize the MTS settings for nmh by adjusting - * the file mts.conf in the nmh etc directory. - */ - -struct bind { - char *keyword; - char **value; -}; - -static struct bind binds[] = { - { "localname", &localname }, - { "localdomain", &localdomain }, - { "systemname", &systemname }, - { "mmdfldir", &mmdfldir }, - { "mmdflfil", &mmdflfil }, - { "uucpldir", &uucpldir }, - { "uucplfil", &uucplfil }, - { "mmdelim1", &mmdlm1 }, - { "mmdelim2", &mmdlm2 }, - { "masquerade", &masquerade }, - -#if defined(SMTPMTS) - { "mts", &sm_method }, - { "hostable", &hostable }, - { "sendmail", &sendmail }, -#endif - - { "clientname", &clientname }, - { "servers", &servers }, - { "pophost", &pophost }, - { "bbdomain", &bb_domain }, - -#ifdef BPOP - { "popbbhost", &popbbhost }, - { "popbbuser", &popbbuser }, - { "popbblist", &popbblist }, -#endif - -#ifdef NNTP - { "nntphost", &popbbhost }, -#endif - - { "maildelivery", &maildelivery }, - { "everyone", &everyone }, - { "noshell", &NoShell }, - { NULL, NULL } -}; - /* - * Read the configuration file for the nmh interface - * to the mail transport system (MTS). - */ - -void -mts_init (char *name) -{ - const char *cp; - FILE *fp; - static int inited = 0; - - if (inited++ || (fp = fopen (get_mtsconf_pathname(), "r")) == NULL) - return; - mts_read_conf_file(fp); - fclose (fp); - - cp = get_mtsuserconf_pathname(); - if (cp != NULL && - ((fp = fopen (get_mtsuserconf_pathname(), "r")) != NULL)) { - mts_read_conf_file(fp); - fclose (fp); - } - - Everyone = atoi (everyone); - - if (strstr(masquerade, "draft_from") != NULL) - draft_from_masquerading = TRUE; - - if (strstr(masquerade, "mmailid") != NULL) - mmailid_masquerading = TRUE; - - if (strstr(masquerade, "username_extension") != NULL) - username_extension_masquerading = TRUE; - -#ifdef SMTPMTS - if (strcmp(sm_method, "smtp") == 0) - sm_mts = MTS_SMTP; - else if (strcmp(sm_method, "sendmail") == 0) - sm_mts = MTS_SENDMAIL; - else { - advise(NULL, "unsupported \"mts\" value in mts.conf: %s", sm_method); - sm_mts = MTS_SMTP; - } -#endif -} - - -#define QUOTE '\\' - -/* - * Convert escaped values, malloc some new space, - * and copy string to malloc'ed memory. - */ - -static char * -tailor_value (unsigned char *s) -{ - int i, r; - char *bp; - char buffer[BUFSIZ]; - size_t len; - - for (bp = buffer; *s; bp++, s++) { - if (*s != QUOTE) { - *bp = *s; - } else { - switch (*++s) { - case 'b': *bp = '\b'; break; - case 'f': *bp = '\f'; break; - case 'n': *bp = '\n'; break; - case 't': *bp = '\t'; break; - - case 0: s--; - case QUOTE: - *bp = QUOTE; - break; - - default: - if (!isdigit (*s)) { - *bp++ = QUOTE; - *bp = *s; - } - r = *s != '0' ? 10 : 8; - for (i = 0; isdigit (*s); s++) - i = i * r + *s - '0'; - s--; - *bp = toascii (i); - break; - } - } - } - *bp = 0; - - len = strlen (buffer) + 1; - bp = mh_xmalloc (len); - memcpy (bp, buffer, len); - - return bp; -} - -/* - * Get the fully qualified name of the local host. - */ - +** Get the fully qualified name of the local host. +*/ char * -LocalName (void) +LocalName(void) { - static char buffer[BUFSIZ] = ""; - struct addrinfo hints, *res; -#ifdef HAVE_UNAME - struct utsname name; -#endif - - /* check if we have cached the local name */ - if (buffer[0]) - return buffer; + static char buffer[BUFSIZ] = ""; + struct addrinfo hints, *res; - mts_init ("mts"); + /* check if we have cached the local name */ + if (buffer[0]) + return buffer; - /* check if the mts.conf file specifies a "localname" */ - if (*localname) { - strncpy (buffer, localname, sizeof(buffer)); - } else { memset(buffer, 0, sizeof(buffer)); -#ifdef HAVE_UNAME - /* first get our local name */ - uname (&name); - strncpy (buffer, name.nodename, sizeof(buffer) - 1); -#else /* first get our local name */ - gethostname (buffer, sizeof(buffer) - 1); -#endif - /* now fully qualify our name */ + gethostname(buffer, sizeof(buffer) - 1); + /* now fully qualify our name */ memset(&hints, 0, sizeof(hints)); hints.ai_flags = AI_CANONNAME; hints.ai_family = PF_UNSPEC; if (getaddrinfo(buffer, NULL, &hints, &res) == 0) { - strncpy(buffer, res->ai_canonname, sizeof(buffer) - 1); - freeaddrinfo(res); + strncpy(buffer, res->ai_canonname, sizeof(buffer) - 1); + freeaddrinfo(res); } - } - /* - * If the mts.conf file specifies a "localdomain", - * we append that now. This should rarely be needed. - */ - if (*localdomain) { - strcat (buffer, "."); - strcat (buffer, localdomain); - } - - return buffer; -} - - -/* - * This is only for UUCP mail. It gets the hostname - * as part of the UUCP "domain". - */ - -char * -SystemName (void) -{ - static char buffer[BUFSIZ] = ""; - -#ifdef HAVE_UNAME - struct utsname name; -#endif - - /* check if we have cached the system name */ - if (buffer[0]) - return buffer; - - mts_init ("mts"); - - /* check if mts.conf file specifies a "systemname" */ - if (*systemname) { - strncpy (buffer, systemname, sizeof(buffer)); return buffer; - } - -#ifdef HAVE_UNAME - uname (&name); - strncpy (buffer, name.nodename, sizeof(buffer)); -#else - gethostname (buffer, sizeof(buffer)); -#endif - - return buffer; } /* - * Get the username of current user - */ - +** Get the username of current user +*/ char * -getusername (void) +getusername(void) { - if (username[0] == '\0') - getuserinfo(); + if (username[0] == '\0') + getuserinfo(); - return username; + return username; } /* - * Get full name of current user (typically from GECOS - * field of password file). - */ - +** Get full name of current user (typically from GECOS +** field of password file). +*/ char * -getfullname (void) +getfullname(void) { - if (username[0] == '\0') - getuserinfo(); + if (username[0] == '\0') + getuserinfo(); - return fullname; + return fullname; } /* - * Find the user's username and full name, and cache them. - * Also, handle "mmailid" username masquerading controlled from the GECOS field - * of the passwd file. - */ - +** Find the user's username and full name, and cache them. +*/ static void -getuserinfo (void) +getuserinfo(void) { - register unsigned char *cp; - register char *np; - register struct passwd *pw; - -#ifdef KPOP - uid_t uid; + unsigned char *cp; + char *np; + struct passwd *pw; + int needquotes = 0; + char tmp[BUFSIZ]; + char *tp; - uid = getuid (); - if (uid == geteuid () && (cp = getenv ("USER")) != NULL - && (pw = getpwnam (cp)) != NULL) - strncpy (username, cp, sizeof(username)); - else if ((pw = getpwuid (uid)) == NULL - || pw->pw_name == NULL - || *pw->pw_name == '\0') { -#else /* KPOP */ - if ((pw = getpwuid (getuid ())) == NULL - || pw->pw_name == NULL - || *pw->pw_name == '\0') { -#endif /* KPOP */ - strncpy (username, "unknown", sizeof(username)); - snprintf (fullname, sizeof(fullname), "The Unknown User-ID (%d)", - (int) getuid ()); - return; - } + if (!(pw = getpwuid(getuid())) || !pw->pw_name || !*pw->pw_name) { + strncpy(username, "unknown", sizeof(username)); + snprintf(fullname, sizeof(fullname), + "The Unknown User-ID (%d)", (int)getuid()); + return; + } - np = pw->pw_gecos; + np = pw->pw_gecos; - /* Get the user's real name from the GECOS field. Stop once we hit a ',', - which some OSes use to separate other 'finger' information in the GECOS - field, like phone number. Also, if mmailid masquerading is turned on due - to "mmailid" appearing on the "masquerade:" line of mts.conf, stop if we - hit a '<' (which should precede any ','s). */ -#ifndef BSD42 - if (mmailid_masquerading) - /* Stop at ',' or '<'. */ - for (cp = fullname; *np != '\0' && *np != ',' && *np != '<'; - *cp++ = *np++) - continue; - else - /* Allow '<' as a legal character of the user's name. This code is - basically a duplicate of the code above the "else" -- we don't - collapse it down to one copy and put the mmailid_masquerading check - inside the loop with "(x ? y : z)" because that's inefficient and the - value'll never change while it's in there. */ - for (cp = fullname; *np != '\0' && *np != ','; - *cp++ = *np++) - continue; -#else /* BSD42 */ - /* On BSD(-derived) systems, the system utilities that deal with the GECOS - field (finger, mail, sendmail, etc.) translate any '&' character in it to - the login name, with the first letter capitalized. So, for instance, - fingering a user "bob" with the GECOS field "& Jones" would reveal him to - be "In real life: Bob Jones". Surprisingly, though, the OS doesn't do - the translation for you, so we have to do it manually here. */ - if (mmailid_masquerading) - /* Stop at ',' or '<'. */ - for (cp = fullname; - *np != '\0' && *np != ',' && *np != '<';) { - if (*np == '&') { /* blech! */ - strcpy (cp, pw->pw_name); - *cp = toupper(*cp); - while (*cp) - cp++; - np++; - } else { + /* + ** Get the user's real name from the GECOS field. Stop once + ** we hit a ',', which some OSes use to separate other 'finger' + ** information in the GECOS field, like phone number. + */ + for (cp = tmp; *np != '\0' && *np != ',';) { *cp++ = *np++; - } } - else - /* Allow '<' as a legal character of the user's name. This code is - basically a duplicate of the code above the "else" -- we don't - collapse it down to one copy and put the mmailid_masquerading check - inside the loop with "(x ? y : z)" because that's inefficient and the - value'll never change while it's in there. */ - for (cp = fullname; - *np != '\0' && *np != ',';) { - if (*np == '&') { /* blech! */ - strcpy (cp, pw->pw_name); - *cp = toupper(*cp); - while (*cp) - cp++; - np++; - } else { - *cp++ = *np++; - } + *cp = '\0'; + strncpy(username, pw->pw_name, sizeof(username)); + + /* + ** The $SIGNATURE environment variable overrides the GECOS field's + ** idea of your real name. + */ + if ((cp = getenv("SIGNATURE")) && *cp) + strncpy(tmp, cp, sizeof(tmp)); + + /* quote the fullname as needed */ + needquotes = 0; + for (tp=tmp; *tp; tp++) { + switch (*tp) { + case '(': case ')': case '<': case '>': case '[': case ']': + case ':': case ';': case '@': case '\\': case ',': case '.': + case '"': /* cf. RFC 5322 */ + break; /* ... the switch */ + default: + continue; /* ... the loop */ + } + /* we've found a special char */ + needquotes = 1; + break; + } + cp=fullname; + if (needquotes) { + *cp++ = '"'; + } + for (tp=tmp; *tp; *cp++=*tp++) { + if (*tp == '"') { + *cp++ = '\\'; /* prepend backslash */ + } + } + if (needquotes) { + *cp++ = '"'; } -#endif /* BSD42 */ - *cp = '\0'; - - if (mmailid_masquerading) { - /* Do mmailid processing. The GECOS field should have the form - "Full Name ". For instance, - "Dan Harkless ". Naturally, you'll want your MTA to - have an alias (e.g. in /etc/aliases) from "fakeusername" to your - account name. */ - if (*np) - np++; - for (cp = username; *np && *np != '>'; *cp++ = *np++) - continue; *cp = '\0'; - } - if (!mmailid_masquerading || *np == '\0') - strncpy (username, pw->pw_name, sizeof(username)); - - /* The $SIGNATURE environment variable overrides the GECOS field's idea of - your real name. */ - if ((cp = getenv ("SIGNATURE")) && *cp) - strncpy (fullname, cp, sizeof(fullname)); - - if (strchr(fullname, '.')) { /* quote any .'s */ - char tmp[BUFSIZ]; - - /* should quote "'s too */ - snprintf (tmp, sizeof(tmp), "\"%s\"", fullname); - strncpy (fullname, tmp, sizeof(fullname)); - } - return; -} - -static const char* -get_mtsconf_pathname (void) -{ - const char *cp = getenv ( "MHMTSCONF "); - if (cp != NULL && *cp != '\0') { - return cp; - } - return mtsconf; -} - -static const char* -get_mtsuserconf_pathname (void) -{ - const char *cp = getenv ( "MHMTSUSERCONF" ); - if (cp != NULL && *cp != '\0') { - return cp; - } - return NULL; -} - -static void -mts_read_conf_file (FILE *fp) -{ - unsigned char *bp; - char *cp, buffer[BUFSIZ]; - struct bind *b; - - while (fgets (buffer, sizeof(buffer), fp)) { - if (!(cp = strchr(buffer, '\n'))) - break; - *cp = 0; - if (*buffer == '#' || *buffer == '\0') - continue; - if (!(bp = strchr(buffer, ':'))) - break; - *bp++ = 0; - while (isspace (*bp)) - *bp++ = 0; - - for (b = binds; b->keyword; b++) - if (!strcmp (buffer, b->keyword)) - break; - if (b->keyword && (cp = tailor_value (bp))) - *b->value = cp; - } + return; }