sfsistat clamfi_body(SMFICTX *ctx, unsigned char *bodyp, size_t len) {
struct CLAMFI *cf;
if(!(cf = (struct CLAMFI *)smfi_getpriv(ctx)))
return SMFIS_CONTINUE; /* whatever */
if(!cf->gotbody) {
sfsistat ret = sendchunk(cf, (unsigned char *)"\r\n", 2, ctx);
if(ret != SMFIS_CONTINUE)
return ret;
cf->gotbody = 1;
}
return sendchunk(cf, bodyp, len, ctx);
}
sfsistat clamfi_header(SMFICTX *ctx, char *headerf, char *headerv) {
struct CLAMFI *cf;
sfsistat ret;
if(!(cf = (struct CLAMFI *)smfi_getpriv(ctx)))
return SMFIS_CONTINUE; /* whatever */
if(!cf->totsz && cf->all_whitelisted) {
logg("*Skipping scan (all destinations whitelisted)\n");
nullify(ctx, cf, CF_NONE);
free(cf);
return SMFIS_ACCEPT;
}
if(!headerf) return SMFIS_CONTINUE; /* just in case */
if((loginfected & (LOGINF_FULL | LOGCLN_FULL)) || viraction) {
if(!cf->msg_subj && !strcasecmp(headerf, "Subject"))
cf->msg_subj = strdup(headerv ? headerv : "");
if(!cf->msg_date && !strcasecmp(headerf, "Date"))
cf->msg_date = strdup(headerv ? headerv : "");
if(!cf->msg_id && !strcasecmp(headerf, "Message-ID"))
cf->msg_id = strdup(headerv ? headerv : "");
}
if(addxvirus==1) {
if(!strcasecmp(headerf, "X-Virus-Scanned")) cf->scanned_count++;
if(!strcasecmp(headerf, "X-Virus-Status")) cf->status_count++;
}
if((ret = sendchunk(cf, (unsigned char *)headerf, strlen(headerf), ctx)) != SMFIS_CONTINUE) {
free(cf);
return ret;
}
if((ret = sendchunk(cf, (unsigned char *)": ", 2, ctx)) != SMFIS_CONTINUE) {
free(cf);
return ret;
}
if(headerv && (ret = sendchunk(cf, (unsigned char *)headerv, strlen(headerv), ctx)) != SMFIS_CONTINUE) {
free(cf);
return ret;
}
ret = sendchunk(cf, (unsigned char *)"\r\n", 2, ctx);
if(ret != SMFIS_CONTINUE)
free(cf);
return ret;
}
static sfsistat sendchunk(struct CLAMFI *cf, unsigned char *bodyp, size_t len, SMFICTX *ctx) {
if(cf->totsz >= maxfilesize || len == 0)
return SMFIS_CONTINUE;
if(!cf->totsz) {
sfsistat ret;
if(nc_connect_rand(&cf->main, &cf->alt, &cf->local)) {
logg("!Failed to initiate streaming/fdpassing\n");
nullify(ctx, cf, CF_NONE);
return FailAction;
}
cf->totsz = 1; /* do not infloop */
if((ret = sendchunk(cf, (unsigned char *)"From clamav-milter\n", 19, ctx)) != SMFIS_CONTINUE)
return ret;
cf->totsz -= 1;
}
if(cf->totsz + len > maxfilesize)
len = maxfilesize - cf->totsz;
cf->totsz += len;
if(cf->local) {
while(len) {
int n = write(cf->alt, bodyp, len);
if (n==-1) {
logg("!Failed to write temporary file\n");
nullify(ctx, cf, CF_BOTH);
return FailAction;
}
len -= n;
bodyp += n;
}
} else {
int sendfailed = 0;
if(len < CLAMFIBUFSZ - cf->bufsz) {
memcpy(&cf->buffer[cf->bufsz], bodyp, len);
cf->bufsz += len;
} else if(len < CLAMFIBUFSZ) {
memcpy(&cf->buffer[cf->bufsz], bodyp, CLAMFIBUFSZ - cf->bufsz);
sendfailed = nc_send(cf->alt, cf->buffer, CLAMFIBUFSZ);
len -= (CLAMFIBUFSZ - cf->bufsz);
memcpy(cf->buffer, &bodyp[CLAMFIBUFSZ - cf->bufsz], len);
cf->bufsz = len;
} else {
if(nc_send(cf->alt, cf->buffer, cf->bufsz) || nc_send(cf->alt, bodyp, len))
sendfailed = 1;
cf->bufsz = 0;
}
if(sendfailed) {
logg("!Streaming failed\n");
nullify(ctx, cf, CF_MAIN);
return FailAction;
}
}
return SMFIS_CONTINUE;
}