Return to remote.c CVS log

Up to [local] / src / usr.bin / cvs

Replace <sys/param.h> with <limits.h> and other less dirty headers where
possible.  Annotate <sys/param.h> lines with their current reasons.  Switch
to PATH_MAX, NGROUPS_MAX, HOST_NAME_MAX+1, LOGIN_NAME_MAX, etc.  Change
MIN() and MAX() to local definitions of MINIMUM() and MAXIMUM() where
sensible to avoid pulling in the pollution.  These are the files confirmed
through binary verification.
ok guenther, millert, doug (helped with the verification protocol)

/*	$OpenBSD: remote.c,v 1.30 2015/01/16 06:40:07 deraadt Exp $	*/
/*
 * Copyright (c) 2006 Joris Vink <joris@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/param.h>	/* MAXBSIZE */
#include <sys/stat.h>

#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "atomicio.h"
#include "cvs.h"
#include "remote.h"

#define MINIMUM(a, b)	(((a) < (b)) ? (a) : (b))

struct cvs_resp *
cvs_remote_get_response_info(const char *response)
{
	int i;

	for (i = 0; cvs_responses[i].supported != -1; i++) {
		if (!strcmp(cvs_responses[i].name, response))
			return (&(cvs_responses[i]));
	}

	return (NULL);
}

struct cvs_req *
cvs_remote_get_request_info(const char *request)
{
	int i;

	for (i = 0; cvs_requests[i].supported != -1; i++) {
		if (!strcmp(cvs_requests[i].name, request))
			return (&(cvs_requests[i]));
	}

	return (NULL);
}

void
cvs_remote_output(const char *data)
{
	FILE *out;
	size_t len;
	char nl = '\n';

	if (cvs_server_active)
		out = stdout;
	else
		out = current_cvsroot->cr_srvin;

	fputs(data, out);
	fputs("\n", out);

	if (cvs_server_active == 0 && cvs_client_inlog_fd != -1) {
		len = strlen(data);
		if (atomicio(vwrite, cvs_client_inlog_fd, data, len) != len ||
		    atomicio(vwrite, cvs_client_inlog_fd, &nl, 1) != 1)
			fatal("failed to write to log file");
	}
}

char *
cvs_remote_input(void)
{
	FILE *in;
	size_t len;
	char nl = '\n';
	char *data, *ldata;

	if (cvs_server_active)
		in = stdin;
	else
		in = current_cvsroot->cr_srvout;

	data = fgetln(in, &len);
	if (data == NULL) {
		if (sig_received != 0)
			fatal("received signal %d", sig_received);

		if (cvs_server_active) {
			cvs_cleanup();
			exit(0);
		}

		fatal("the connection has been closed by the server");
	}

	if (data[len - 1] == '\n') {
		data[len - 1] = '\0';
		ldata = xstrdup(data);
	} else {
		ldata = xmalloc(len + 1);
		memcpy(ldata, data, len);
		ldata[len] = '\0';
	}

	if (cvs_server_active == 0 && cvs_client_outlog_fd != -1) {
		len = strlen(data);
		if (atomicio(vwrite, cvs_client_outlog_fd, data, len) != len ||
		    atomicio(vwrite, cvs_client_outlog_fd, &nl, 1) != 1)
			fatal("failed to write to log file");
	}

	return (ldata);
}

void
cvs_remote_receive_file(int fd, size_t len)
{
	FILE *in;
	char data[MAXBSIZE];
	size_t nread, nleft, toread;

	if (cvs_server_active)
		in = stdin;
	else
		in = current_cvsroot->cr_srvout;

	nleft = len;

	while (nleft > 0) {
		toread = MINIMUM(nleft, MAXBSIZE);

		nread = fread(data, sizeof(char), toread, in);
		if (nread == 0)
			fatal("error receiving file");

		if (atomicio(vwrite, fd, data, nread) != nread)
			fatal("failed to write %zu bytes", nread);

		if (cvs_server_active == 0 && cvs_client_outlog_fd != -1 &&
		    atomicio(vwrite, cvs_client_outlog_fd, data, nread)
		    != nread)
			fatal("failed to write to log file");

		nleft -= nread;
	}
}

void
cvs_remote_send_file(const char *path, int _fd)
{
	int fd;
	FILE *out, *in;
	size_t ret, rw;
	off_t total;
	struct stat st;
	char buf[18], data[MAXBSIZE];

	if (cvs_server_active)
		out = stdout;
	else
		out = current_cvsroot->cr_srvin;

	fd = dup(_fd);
	if (fd == -1)
		fatal("cvs_remote_send_file: dup: %s", strerror(errno));

	if (lseek(fd, 0, SEEK_SET) < 0)
		fatal("cvs_remote_send_file: %s: lseek: %s", path,
		    strerror(errno));

	if (fstat(fd, &st) == -1)
		fatal("cvs_remote_send_file: %s: fstat: %s", path,
		    strerror(errno));

	cvs_modetostr(st.st_mode, buf, sizeof(buf));
	cvs_remote_output(buf);

	(void)xsnprintf(buf, sizeof(buf), "%lld", st.st_size);
	cvs_remote_output(buf);

	if ((in = fdopen(fd, "r")) == NULL)
		fatal("cvs_remote_send_file: fdopen %s", strerror(errno));

	total = 0;
	while ((ret = fread(data, sizeof(char), MAXBSIZE, in)) != 0) {
		rw = fwrite(data, sizeof(char), ret, out);
		if (rw != ret)
			fatal("failed to write %zu bytes", ret);

		if (cvs_server_active == 0 && cvs_client_inlog_fd != -1 &&
		    atomicio(vwrite, cvs_client_inlog_fd, data, ret) != ret)
			fatal("failed to write to log file");

		total += ret;
	}

	if (total != st.st_size)
		fatal("length mismatch, %lld vs %lld", total, st.st_size);

	(void)fclose(in);
}

void
cvs_remote_send_file_buf(char *file, BUF *bp, mode_t mode)
{
	char buf[18];
	u_char *data;
	size_t len, ret;

	if (cvs_server_active != 1)
		fatal("cvs_remote_send_file_buf is server only");

	len = buf_len(bp);
	data = buf_release(bp);

	cvs_modetostr(mode, buf, sizeof(buf));
	cvs_remote_output(buf);

	(void)xsnprintf(buf, sizeof(buf), "%ld", len);
	cvs_remote_output(buf);

	ret = fwrite(data, sizeof(char), len, stdout);
	if (ret != len)
		cvs_log(LP_ERR, "warning: sent %s truncated", file);

	if (cvs_server_active == 0 && cvs_client_inlog_fd != -1 &&
	    atomicio(vwrite, cvs_client_inlog_fd, data, len) != len)
		fatal("failed to write to log file");

	xfree(data);
}

void
cvs_remote_classify_file(struct cvs_file *cf)
{
	struct stat st;
	CVSENTRIES *entlist;

	entlist = cvs_ent_open(cf->file_wd);
	cf->file_ent = cvs_ent_get(entlist, cf->file_name);

	if (cf->file_ent != NULL && cf->file_ent->ce_status != CVS_ENT_REG) {
		if (cf->file_ent->ce_status == CVS_ENT_ADDED) {
			if (cf->fd != -1)
				cf->file_status = FILE_ADDED;
			else
				cf->file_status = FILE_UNKNOWN;
		} else {
			cf->file_status = FILE_REMOVED;
		}

		return;
	}

	if (cf->file_ent != NULL) {
		if (cf->file_ent->ce_type == CVS_ENT_DIR)
			cf->file_type = CVS_DIR;
		else
			cf->file_type = CVS_FILE;
	}

	if (cf->fd != -1)
		cf->file_flags |= FILE_ON_DISK;

	if ((cf->file_flags & FILE_ON_DISK) && cf->file_ent != NULL) {
		if (fstat(cf->fd, &st) == -1)
			fatal("cvs_remote_classify_file(%s): %s", cf->file_path,
			    strerror(errno));

		if (st.st_mtime != cf->file_ent->ce_mtime ||
		    cf->file_ent->ce_conflict != NULL)
			cf->file_status = FILE_MODIFIED;
		else
			cf->file_status = FILE_UPTODATE;
	} else if (!(cf->file_flags & FILE_ON_DISK)) {
		cf->file_status = FILE_UNKNOWN;
	}

	if (cvs_cmdop == CVS_OP_IMPORT && cf->file_type == CVS_FILE)
		cf->file_status = FILE_MODIFIED;
}


void
cvs_validate_directory(const char *path)
{
	char *dir, *sp, *dp;

	dir = xstrdup(path);

	for (sp = dir; sp != NULL; sp = dp) {
		dp = strchr(sp, '/');
		if (dp != NULL)
			*(dp++) = '\0';

		if (!strcmp(sp, ".."))
			fatal("path validation failed!");
	}

	xfree(dir);
}