diff options
Diffstat (limited to 'rfc822.c')
| -rw-r--r-- | rfc822.c | 36 |
1 files changed, 18 insertions, 18 deletions
@@ -22,9 +22,8 @@ void reply_hack(buf, host) char *buf; /* header to be hacked */ const char *host; /* server hostname */ { - const char *from; + char *from, *cp; int parendepth, state, has_host_part; - char mycopy[MSGBUFSIZE+1]; if (strncmp("From: ", buf, 6) && strncmp("To: ", buf, 4) @@ -34,10 +33,9 @@ const char *host; /* server hostname */ return; } - strcpy(mycopy, buf); parendepth = state = 0; has_host_part = FALSE; - for (from = mycopy; *from; from++) + for (from = buf; *from; from++) { #ifdef TESTMAIN printf("state %d: %s", state, mycopy); @@ -66,15 +64,17 @@ const char *host; /* server hostname */ state = 2; else if ((*from == ',' || HEADER_END(from)) && !has_host_part) { + int hostlen; + while (isspace(*from)) --from; from++; - while (isspace(*buf)) - --buf; - buf++; - strcpy(buf, "@"); - strcat(buf, host); - buf += strlen(buf); + hostlen = strlen(host); + for (cp = from + strlen(from); cp >= from; --cp) + cp[hostlen+1] = *cp; + *from++ = '@'; + memcpy(from, host, hostlen); + from += strlen(from); has_host_part = TRUE; } break; @@ -89,19 +89,19 @@ const char *host; /* server hostname */ has_host_part = TRUE; else if (*from == '>' && !has_host_part) { - strcpy(buf, "@"); - strcat(buf, host); - buf += strlen(buf); + int hostlen; + + hostlen = strlen(host); + for (cp = from + strlen(from); cp >= from; --cp) + cp[hostlen+1] = *cp; + *from++ = '@'; + memcpy(from, host, hostlen); + from += strlen(from); has_host_part = TRUE; } break; } - - /* all characters from the old buffer get copied to the new one */ - *buf++ = *from; } - - *buf = '\0'; } char *nxtaddr(hdr) |