/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│ │vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│ ╞══════════════════════════════════════════════════════════════════════════════╡ │ This is free and unencumbered software released into the public domain. │ │ │ │ Anyone is free to copy, modify, publish, use, compile, sell, or │ │ distribute this software, either in source code form or as a compiled │ │ binary, for any purpose, commercial or non-commercial, and by any │ │ means. │ │ │ │ In jurisdictions that recognize copyright laws, the author or authors │ │ of this software dedicate any and all copyright interest in the │ │ software to the public domain. We make this dedication for the benefit │ │ of the public at large and to the detriment of our heirs and │ │ successors. We intend this dedication to be an overt act of │ │ relinquishment in perpetuity of all present and future rights to this │ │ software under copyright law. │ │ │ │ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, │ │ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF │ │ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. │ │ IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR │ │ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, │ │ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR │ │ OTHER DEALINGS IN THE SOFTWARE. │ │ │ ╚─────────────────────────────────────────────────────────────────────────────*/ #include "libc/dns/ent.h" #include "libc/dns/servicestxt.h" struct servent *getservbyport(int port, const char *proto) { static struct servent *ptr1, se1; char name[DNS_NAME_MAX]; char *localproto = proto; if (!ptr1) { se1.s_name = NULL; se1.s_aliases = (char **)malloc(sizeof(char *) * 1); if (!se1.s_aliases) return NULL; se1.s_aliases[0] = NULL; se1.s_port = 0; se1.s_proto = NULL; ptr1 = &se1; } if (LookupServicesByPort(port, &localproto, name, sizeof(name)) == -1) { // localproto got alloc'd during the lookup? if (!proto && localproto != proto) free(localproto); return NULL; } ptr1->s_port = port; if (ptr1->s_name) free(ptr1->s_name); ptr1->s_name = strdup(name); if (ptr1->s_proto) free(ptr1->s_proto); ptr1->s_proto = strdup(localproto); if (!proto && localproto != proto) free(localproto); return ptr1; }