thodg/got/lib/gotconfig.c

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• Hash : 336075a4
  Author :
  Date : 2022-06-25T09:22:02
  

  build with -Wmissing-prototypes ok stsp@

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• lib/gotconfig.c

• /*
   * Copyright (c) 2020 Stefan Sperling <stsp@openbsd.org>
   *
   * Permission to use, copy, modify, and distribute this software for any
   * purpose with or without fee is hereby granted, provided that the above
   * copyright notice and this permission notice appear in all copies.
   *
   * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   */
  
  #include <sys/types.h>
  #include <sys/queue.h>
  #include <sys/uio.h>
  #include <sys/socket.h>
  
  #include <unistd.h>
  #include <fcntl.h>
  #include <errno.h>
  #include <stdlib.h>
  #include <stdio.h>
  #include <stdint.h>
  #include <imsg.h>
  #include <sha1.h>
  #include <limits.h>
  
  #include "got_error.h"
  #include "got_object.h"
  #include "got_repository.h"
  
  #include "got_lib_delta.h"
  #include "got_lib_object.h"
  #include "got_lib_privsep.h"
  #include "got_lib_gotconfig.h"
  
  #include "got_gotconfig.h"
  
  const struct got_error *
  got_gotconfig_read(struct got_gotconfig **conf, const char *gotconfig_path)
  {
  	const struct got_error *err = NULL, *child_err = NULL;
  	int fd = -1;
  	int imsg_fds[2] = { -1, -1 };
  	pid_t pid;
  	struct imsgbuf *ibuf;
  
  	*conf = calloc(1, sizeof(**conf));
  	if (*conf == NULL)
  		return got_error_from_errno("calloc");
  
  	fd = open(gotconfig_path, O_RDONLY | O_CLOEXEC);
  	if (fd == -1) {
  		if (errno == ENOENT)
  			return NULL;
  		return got_error_from_errno2("open", gotconfig_path);
  	}
  
  	ibuf = calloc(1, sizeof(*ibuf));
  	if (ibuf == NULL) {
  		err = got_error_from_errno("calloc");
  		goto done;
  	}
  
  	if (socketpair(AF_UNIX, SOCK_STREAM, PF_UNSPEC, imsg_fds) == -1) {
  		err = got_error_from_errno("socketpair");
  		goto done;
  	}
  
  	pid = fork();
  	if (pid == -1) {
  		err = got_error_from_errno("fork");
  		goto done;
  	} else if (pid == 0) {
  		got_privsep_exec_child(imsg_fds, GOT_PATH_PROG_READ_GOTCONFIG,
  		    gotconfig_path);
  		/* not reached */
  	}
  
  	if (close(imsg_fds[1]) == -1) {
  		err = got_error_from_errno("close");
  		goto done;
  	}
  	imsg_fds[1] = -1;
  	imsg_init(ibuf, imsg_fds[0]);
  
  	err = got_privsep_send_gotconfig_parse_req(ibuf, fd);
  	if (err)
  		goto done;
  	fd = -1;
  
  	err = got_privsep_send_gotconfig_author_req(ibuf);
  	if (err)
  		goto done;
  
  	err = got_privsep_recv_gotconfig_str(&(*conf)->author, ibuf);
  	if (err)
  		goto done;
  
  	err = got_privsep_send_gotconfig_remotes_req(ibuf);
  	if (err)
  		goto done;
  
  	err = got_privsep_recv_gotconfig_remotes(&(*conf)->remotes,
  	    &(*conf)->nremotes, ibuf);
  	if (err)
  		goto done;
  
  	err = got_privsep_send_stop(imsg_fds[0]);
  	child_err = got_privsep_wait_for_child(pid);
  	if (child_err && err == NULL)
  		err = child_err;
  done:
  	if (imsg_fds[0] != -1 && close(imsg_fds[0]) == -1 && err == NULL)
  		err = got_error_from_errno("close");
  	if (imsg_fds[1] != -1 && close(imsg_fds[1]) == -1 && err == NULL)
  		err = got_error_from_errno("close");
  	if (fd != -1 && close(fd) == -1 && err == NULL)
  		err = got_error_from_errno2("close", gotconfig_path);
  	if (err) {
  		got_gotconfig_free(*conf);
  		*conf = NULL;
  	}
  	free(ibuf);
  	return err;
  }
  
  void
  got_gotconfig_free(struct got_gotconfig *conf)
  {
  	int i;
  
  	if (conf == NULL)
  		return;
  
  	free(conf->author);
  
  	for (i = 0; i < conf->nremotes; i++)
  		got_repo_free_remote_repo_data(&conf->remotes[i]);
  	free(conf->remotes);
  	free(conf);
  }
  
  const char *
  got_gotconfig_get_author(const struct got_gotconfig *conf)
  {
  	return conf->author;
  }
  
  void
  got_gotconfig_get_remotes(int *nremotes, const struct got_remote_repo **remotes,
      const struct got_gotconfig *conf)
  {
  	*nremotes = conf->nremotes;
  	*remotes = conf->remotes;
  }
  

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