/** * Called from parse_dispatch_lines() for each complete line of output. * * @return FALSE to stop processing of any remaining data. */ static bool ghc_host_line(struct parse_context *ctx, const char *buf, size_t len) { if (GNET_PROPERTY(bootstrap_debug) > 2) g_debug("BOOT GHC host line #%u (%zu bytes): %s", ctx->processed + 1, len, buf); if (len) { host_addr_t addr; uint16 port; if (string_to_host_addr_port(buf, NULL, &addr, &port)) { ctx->processed++; hcache_add_caught(HOST_ULTRA, addr, port, "GHC"); if (GNET_PROPERTY(bootstrap_debug) > 1) g_debug("BOOT collected %s from GHC %s", host_addr_to_string(addr), http_async_url(ctx->handle)); } } return TRUE; }
/** * Loads the whitelist into memory. */ static void G_COLD whitelist_retrieve(void) { char line[1024]; FILE *f; filestat_t st; unsigned linenum = 0; file_path_t fp[1]; whitelist_generation++; file_path_set(fp, settings_config_dir(), whitelist_file); f = file_config_open_read_norename("Host Whitelist", fp, N_ITEMS(fp)); if (!f) return; if (fstat(fileno(f), &st)) { g_warning("%s(): fstat() failed: %m", G_STRFUNC); fclose(f); return; } while (fgets(line, sizeof line, f)) { pslist_t *sl_addr, *sl; const char *endptr, *start; host_addr_t addr; uint16 port; uint8 bits; bool item_ok; bool use_tls; char *hname; linenum++; if (!file_line_chomp_tail(line, sizeof line, NULL)) { g_warning("%s(): line %u too long, aborting", G_STRFUNC, linenum); break; } if (file_line_is_skipable(line)) continue; sl_addr = NULL; addr = zero_host_addr; endptr = NULL; hname = NULL; endptr = is_strprefix(line, "tls:"); if (endptr) { use_tls = TRUE; start = endptr; } else { use_tls = FALSE; start = line; } port = 0; if (string_to_host_addr_port(start, &endptr, &addr, &port)) { sl_addr = name_to_host_addr(host_addr_to_string(addr), settings_dns_net()); } else if (string_to_host_or_addr(start, &endptr, &addr)) { uchar c = *endptr; switch (c) { case '\0': case ':': case '/': break; default: if (!is_ascii_space(c)) endptr = NULL; } if (!endptr) { g_warning("%s(): line %d: " "expected a hostname or IP address \"%s\"", G_STRFUNC, linenum, line); continue; } /* Terminate the string for name_to_host_addr() */ hname = h_strndup(start, endptr - start); } else { g_warning("%s(): line %d: expected hostname or IP address \"%s\"", G_STRFUNC, linenum, line); continue; } g_assert(sl_addr != NULL || hname != NULL); g_assert(NULL != endptr); bits = 0; item_ok = TRUE; /* * When an explicit address is given (no hostname) and with no * port, one can suffix the address with bits to indicate a CIDR * range of whitelisted addresses. */ if (0 == port) { /* Ignore trailing items separated by a space */ while ('\0' != *endptr && !is_ascii_space(*endptr)) { uchar c = *endptr++; if (':' == c) { int error; uint32 v; if (0 != port) { g_warning("%s(): line %d: multiple colons after host", G_STRFUNC, linenum); item_ok = FALSE; break; } v = parse_uint32(endptr, &endptr, 10, &error); port = (error || v > 0xffff) ? 0 : v; if (0 == port) { g_warning("%s(): line %d: " "invalid port value after host", G_STRFUNC, linenum); item_ok = FALSE; break; } } else if ('/' == c) { const char *ep; uint32 mask; if (0 != bits) { g_warning("%s(): line %d: " "multiple slashes after host", G_STRFUNC, linenum); item_ok = FALSE; break; } if (string_to_ip_strict(endptr, &mask, &ep)) { if (!host_addr_is_ipv4(addr)) { g_warning("%s(): line %d: " "IPv4 netmask after non-IPv4 address", G_STRFUNC, linenum); item_ok = FALSE; break; } endptr = ep; if (0 == (bits = netmask_to_cidr(mask))) { g_warning("%s(): line %d: " "IPv4 netmask after non-IPv4 address", G_STRFUNC, linenum); item_ok = FALSE; break; } } else { int error; uint32 v; v = parse_uint32(endptr, &endptr, 10, &error); if ( error || 0 == v || (v > 32 && host_addr_is_ipv4(addr)) || (v > 128 && host_addr_is_ipv6(addr)) ) { g_warning("%s(): line %d: " "invalid numeric netmask after host", G_STRFUNC, linenum); item_ok = FALSE; break; } bits = v; } } else { g_warning("%s(): line %d: " "unexpected character after host", G_STRFUNC, linenum); item_ok = FALSE; break; } } } if (item_ok) { struct whitelist *item; if (hname) { item = whitelist_hostname_create(use_tls, hname, port); whitelist_dns_resolve(item, FALSE); } else { PSLIST_FOREACH(sl_addr, sl) { host_addr_t *aptr = sl->data; g_assert(aptr != NULL); item = whitelist_addr_create(use_tls, *aptr, port, bits); whitelist_add(item); } } } else {
/** * Called from gwc_parse_dispatch_lines() for each complete line of output. * * @return FALSE to stop processing of any remaining data. */ static bool gwc_host_line(struct gwc_parse_context *ctx, const char *buf, size_t len) { int c; if (GNET_PROPERTY(bootstrap_debug) > 3) g_message("BOOT GWC host line (%lu bytes): %s", (ulong) len, buf); if (is_strprefix(buf, "ERROR")) { g_warning("GWC cache \"%s\" returned %s", http_async_url(ctx->handle), buf); http_async_cancel(ctx->handle); return FALSE; } if (len <= 2) return TRUE; /* Skip this line silently */ /* * A line starting with "H|" is a host, with "U|" a GWC URL. * Letters are case-insensitive. */ if (buf[1] != '|') goto malformed; c = ascii_toupper(buf[0]); if ('H' == c) { host_addr_t addr; uint16 port; if (string_to_host_addr_port(&buf[2], NULL, &addr, &port)) { ctx->processed++; hcache_add_caught(HOST_G2HUB, addr, port, "GWC"); if (GNET_PROPERTY(bootstrap_debug) > 1) { g_message("BOOT (G2) collected %s from GWC %s", host_addr_port_to_string(addr, port), http_async_url(ctx->handle)); } } return TRUE; } else if ('U' == c) { char *end = strchr(&buf[2], '|'); char *url; if (NULL == end) goto malformed; ctx->processed++; url = h_strndup(&buf[2], ptr_diff(end, &buf[2])); gwc_add(url); hfree(url); return TRUE; } else if ('I' == c) { return TRUE; /* Ignore information line */ } /* * If we come here, we did not recognize the line properly. */ if (GNET_PROPERTY(bootstrap_debug) > 2) { g_warning("GWC ignoring unknown line \"%s\" from %s", buf, http_async_url(ctx->handle)); } return TRUE; malformed: if (GNET_PROPERTY(bootstrap_debug)) { g_warning("GWC ignoring malformed line \"%s\" from %s", buf, http_async_url(ctx->handle)); } return TRUE; }