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HTTP proxy: the host's name asked of the system once

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Forwarded and Via asked gethostname(), a uname() syscall, for each
request. The name is kept, asked again after a reload.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Vladimir Dubrovin 2026-10-27 18:38:20 +03:00
parent 7718745f53
commit 5ed8e8cee4
1 changed files with 21 additions and 7 deletions
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28
src/proxy.c
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@ -417,6 +417,25 @@ static unsigned char * reqpath(unsigned char *line, unsigned char **host, int *h
/* Logs the request: its line, as a copy, cut at its line end and without /* Logs the request: its line, as a copy, cut at its line end and without
the password of an ftp:// URL. */ the password of an ftp:// URL. */
/* The host's name for Forwarded and Via, asked of the system once, and
again after a reload: not for each request. Two copies, so that one
being read is never the one being written. */
static const char *hostname(void){
static char names[2][256];
static volatile int cur = -1;
static int version = -1;
int i = cur;
if(i < 0 || version != runconf->version){
i = (i + 1) & 1;
if(gethostname(names[i], sizeof(names[i]))) names[i][0] = 0;
names[i][sizeof(names[i]) - 1] = 0;
version = runconf->version;
cur = i;
}
return names[i];
}
static void logurl(struct clientparam * param, char * req, int ftp){ static void logurl(struct clientparam * param, char * req, int ftp){
char *sb; char *sb;
char *se; char *se;
@ -1340,16 +1359,11 @@ for(;;){
hlen += myinet_ntop(*SAFAMILY(&param->sincr), SAADDR(&param->sincr), (char *)buf + hlen, 128); hlen += myinet_ntop(*SAFAMILY(&param->sincr), SAADDR(&param->sincr), (char *)buf + hlen, 128);
if(*SAFAMILY(&param->sincr) == AF_INET6) hlen += sprintf((char *)buf + hlen, "]:%d\";by=", (int)ntohs(*SAPORT(&param->sincr))); if(*SAFAMILY(&param->sincr) == AF_INET6) hlen += sprintf((char *)buf + hlen, "]:%d\";by=", (int)ntohs(*SAPORT(&param->sincr)));
else hlen += sprintf((char *)buf + hlen, ":%d;by=", (int)ntohs(*SAPORT(&param->sincr))); else hlen += sprintf((char *)buf + hlen, ":%d;by=", (int)ntohs(*SAPORT(&param->sincr)));
gethostname((char *)buf + hlen, 256); hlen += sprintf((char *)buf + hlen, "%.255s", hostname());
buf[hlen + 255] = 0;
hlen += (int)strlen((char *)buf + hlen);
hlen += sprintf((char *)buf + hlen, ":%d\r\n", (int)ntohs(*SAPORT(&param->sincl))); hlen += sprintf((char *)buf + hlen, ":%d\r\n", (int)ntohs(*SAPORT(&param->sincl)));
} }
else if(anonymous>1){ else if(anonymous>1){
hlen += sprintf((char *)buf + hlen, "Via: 1.1 "); hlen += sprintf((char *)buf + hlen, "Via: 1.1 %.255s", hostname());
gethostname((char *)buf + hlen, 256);
buf[hlen + 255] = 0;
hlen += (int)strlen((char *)buf + hlen);
hlen += snprintf((char *)buf + hlen, 400, ":%d (%.100s %.100s)\r\nX-Forwarded-For: ", (int)ntohs(*SAPORT(&param->srv->intsa)), runconf->stringtable?(char *)runconf->stringtable[2]:"", runconf->stringtable?(char *)runconf->stringtable[3]:""); hlen += snprintf((char *)buf + hlen, 400, ":%d (%.100s %.100s)\r\nX-Forwarded-For: ", (int)ntohs(*SAPORT(&param->srv->intsa)), runconf->stringtable?(char *)runconf->stringtable[2]:"", runconf->stringtable?(char *)runconf->stringtable[3]:"");
if(anonymous != 2)hlen += myinet_ntop(*SAFAMILY(&param->sincr), SAADDR(&param->sincr), (char *)buf + hlen, 128); if(anonymous != 2)hlen += myinet_ntop(*SAFAMILY(&param->sincr), SAADDR(&param->sincr), (char *)buf + hlen, 128);
else { else {