fetchmail - [fork] set imap idle timeout to 600s, some servers don't follow rfc recommendations

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Diffstat (limited to 'smtp.c')

0 files changed, 0 insertions, 0 deletions

/* * smtp.c -- code for speaking SMTP to a listener port * * Concept due to Harry Hochheiser. Implementation by ESR. Cleanup and * strict RFC821 compliance by Cameron MacPherson. * * Copyright 1997 Eric S. Raymond * For license terms, see the file COPYING in this directory. */ #include <stdio.h> #include <unistd.h> #include <string.h> #include "fetchmail.h" #include "socket.h" #include "smtp.h" #include "config.h" struct opt { const char *name; int value; }; static struct opt extensions[] = { {"8BITMIME", ESMTP_8BITMIME}, {"SIZE", ESMTP_SIZE}, {"ETRN", ESMTP_ETRN}, #ifdef ODMR_ENABLE {"ATRN", ESMTP_ATRN}, #endif /* ODMR_ENABLE */ {(char *)NULL, 0}, }; char smtp_response[MSGBUFSIZE]; static char smtp_mode = 'S'; void SMTP_setmode(char sl) /* set whether we are speaking SMTP or LMTP */ { smtp_mode = sl; } int SMTP_helo(int sock,const char *host) /* send a "HELO" message to the SMTP listener */ { int ok; SockPrintf(sock,"HELO %s\r\n", host); if (outlevel >= O_MONITOR) report(stdout, "SMTP> HELO %s\n", host); ok = SMTP_ok(sock); return ok; } int SMTP_ehlo(int sock, const char *host, int *opt) /* send a "EHLO" message to the SMTP listener, return extension status bits */ { struct opt *hp; SockPrintf(sock,"%cHLO %s\r\n", (smtp_mode == 'S') ? 'E' : smtp_mode, host); if (outlevel >= O_MONITOR) report(stdout, "%cMTP> %cHLO %s\n", smtp_mode, (smtp_mode == 'S') ? 'E' : smtp_mode, host); *opt = 0; while ((SockRead(sock, smtp_response, sizeof(smtp_response)-1)) != -1) { int n = strlen(smtp_response); if (smtp_response[strlen(smtp_response)-1] == '\n') smtp_response[strlen(smtp_response)-1] = '\0'; if (smtp_response[strlen(smtp_response)-1] == '\r') smtp_response[strlen(smtp_response)-1] = '\0'; if (n < 4) return SM_ERROR; smtp_response[n] = '\0'; if (outlevel >= O_MONITOR) report(stdout, "SMTP< %s\n", smtp_response); for (hp = extensions; hp->name; hp++) if (!strncasecmp(hp->name, smtp_response+4, strlen(hp->name))) *opt |= hp->value; if ((smtp_response[0] == '1' || smtp_response[0] == '2' || smtp_response[0] == '3') && smtp_response[3] == ' ') return SM_OK; else if (smtp_response[3] != '-') return SM_ERROR; } return SM_UNRECOVERABLE; } int SMTP_from(int sock, const char *from, const char *opts) /* send a "MAIL FROM:" message to the SMTP listener */ { int ok; char buf[MSGBUFSIZE]; if (strchr(from, '<')) #ifdef HAVE_SNPRINTF snprintf(buf, sizeof(buf), #else sprintf(buf, #endif /* HAVE_SNPRINTF */ "MAIL FROM: %s", from); else #ifdef HAVE_SNPRINTF snprintf(buf, sizeof(buf), #else sprintf(buf, #endif /* HAVE_SNPRINTF */ "MAIL FROM:<%s>", from); if (opts) #ifdef HAVE_SNPRINTF snprintf(buf+strlen(buf), sizeof(buf)-strlen(buf), "%s", opts); #else strcat(buf, opts); #endif /* HAVE_SNPRINTF */ SockPrintf(sock,"%s\r\n", buf); if (outlevel >= O_MONITOR) report(stdout, "%cMTP> %s\n", smtp_mode, buf); ok = SMTP_ok(sock); return ok; } int SMTP_rcpt(int sock, const char *to) /* send a "RCPT TO:" message to the SMTP listener */ { int ok; SockPrintf(sock,"RCPT TO:<%s>\r\n", to); if (outlevel >= O_MONITOR) report(stdout, "%cMTP> RCPT TO:<%s>\n", smtp_mode, to); ok = SMTP_ok(sock); return ok; } int SMTP_data(int sock) /* send a "DATA" message to the SMTP listener */ { int ok; SockPrintf(sock,"DATA\r\n"); if (outlevel >= O_MONITOR) report(stdout, "%cMTP> DATA\n", smtp_mode); ok = SMTP_ok(sock); return ok; } int SMTP_rset(int sock) /* send a "RSET" message to the SMTP listener */ { int ok; SockPrintf(sock,"RSET\r\n"); if (outlevel >= O_MONITOR) report(stdout, "%cMTP> RSET\n", smtp_mode); ok = SMTP_ok(sock); return ok; } int SMTP_quit(int sock) /* send a "QUIT" message to the SMTP listener */ { int ok; SockPrintf(sock,"QUIT\r\n"); if (outlevel >= O_MONITOR) report(stdout, "%cMTP> QUIT\n", smtp_mode); ok = SMTP_ok(sock); return ok; } int SMTP_eom(int sock) /* send a message data terminator to the SMTP listener */ { int ok; SockPrintf(sock,".\r\n"); if (outlevel >= O_MONITOR) report(stdout, "%cMTP>. (EOM)\n", smtp_mode); /* * When doing LMTP, must process many of these at the outer level. */ if (smtp_mode == 'S') ok = SMTP_ok(sock); else ok = SM_OK; return ok; } int SMTP_ok(int sock) /* returns status of SMTP connection */ { while ((SockRead(sock, smtp_response, sizeof(smtp_response)-1)) != -1) { int n = strlen(smtp_response); if (smtp_response[strlen(smtp_response)-1] == '\n') smtp_response[strlen(smtp_response)-1] = '\0'; if (smtp_response[strlen(smtp_response)-1] == '\r') smtp_response[strlen(smtp_response)-1] = '\0'; if (n < 4) return SM_ERROR; smtp_response[n] = '\0'; if (outlevel >= O_MONITOR) report(stdout, "%cMTP< %s\n", smtp_mode, smtp_response); if ((smtp_response[0] == '1' || smtp_response[0] == '2' || smtp_response[0] == '3') && smtp_response[3] == ' ') return SM_OK; else if (smtp_response[3] != '-') return SM_ERROR; } return SM_UNRECOVERABLE; } /* smtp.c ends here */


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