[rsync/rsync.git] / sender.c

/* 
   Copyright (C) Andrew Tridgell 1996
   Copyright (C) Paul Mackerras 1996
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "rsync.h"

extern int verbose;
extern int remote_version;
extern int csum_length;
extern struct stats stats;
extern int io_error;
extern int dry_run;
extern int am_server;


/*
  receive the checksums for a buffer
  */
static struct sum_struct *receive_sums(int f)
{
	struct sum_struct *s;
	int i;
	OFF_T offset = 0;

	s = (struct sum_struct *)malloc(sizeof(*s));
	if (!s) out_of_memory("receive_sums");

	s->count = read_int(f);
	s->n = read_int(f);
	s->remainder = read_int(f);  
	s->sums = NULL;

	if (verbose > 3)
		rprintf(FINFO,"count=%d n=%d rem=%d\n",
			s->count,s->n,s->remainder);

	if (s->count == 0) 
		return(s);

	s->sums = (struct sum_buf *)malloc(sizeof(s->sums[0])*s->count);
	if (!s->sums) out_of_memory("receive_sums");

	for (i=0;i<s->count;i++) {
		s->sums[i].sum1 = read_int(f);
		read_buf(f,s->sums[i].sum2,csum_length);

		s->sums[i].offset = offset;
		s->sums[i].i = i;

		if (i == s->count-1 && s->remainder != 0) {
			s->sums[i].len = s->remainder;
		} else {
			s->sums[i].len = s->n;
		}
		offset += s->sums[i].len;

		if (verbose > 3)
			rprintf(FINFO,"chunk[%d] len=%d offset=%.0f sum1=%08x\n",
				i,s->sums[i].len,(double)s->sums[i].offset,s->sums[i].sum1);
	}

	s->flength = offset;

	return s;
}


void send_files(struct file_list *flist,int f_out,int f_in)
{ 
	int fd;
	struct sum_struct *s;
	struct map_struct *buf;
	STRUCT_STAT st;
	char fname[MAXPATHLEN];  
	int i;
	struct file_struct *file;
	int phase = 0;
	extern struct stats stats;		
	struct stats initial_stats;
	extern int write_batch;   /* dw */
	extern int read_batch;    /* dw */
	int checksums_match;   /* dw */
	int buff_len;  /* dw */
	char buff[CHUNK_SIZE];    /* dw */
	int j;   /* dw */
	int done;   /* dw */

	if (verbose > 2)
		rprintf(FINFO,"send_files starting\n");

	while (1) {
		int offset=0;

		i = read_int(f_in);
		if (i == -1) {
			if (phase==0 && remote_version >= 13) {
				phase++;
				csum_length = SUM_LENGTH;
				write_int(f_out,-1);
				if (verbose > 2)
					rprintf(FINFO,"send_files phase=%d\n",phase);
				continue;
			}
			break;
		}

		if (i < 0 || i >= flist->count) {
			rprintf(FERROR,"Invalid file index %d (count=%d)\n", 
				i, flist->count);
			exit_cleanup(RERR_PROTOCOL);
		}

		file = flist->files[i];

		stats.num_transferred_files++;
		stats.total_transferred_size += file->length;

		fname[0] = 0;
		if (file->basedir) {
			strlcpy(fname,file->basedir,MAXPATHLEN);
			if (strlen(fname) == MAXPATHLEN-1) {
				io_error = 1;
				rprintf(FERROR, "send_files failed on long-named directory %s\n",
					fname);
				return;
			}
			strlcat(fname,"/",MAXPATHLEN);
			offset = strlen(file->basedir)+1;
		}
		strlcat(fname,f_name(file),MAXPATHLEN);
	  
		if (verbose > 2) 
			rprintf(FINFO,"send_files(%d,%s)\n",i,fname);
	  
		if (dry_run) {	
			if (!am_server) {
				log_transfer(file, fname+offset);
			}
			write_int(f_out,i);
			continue;
		}

		initial_stats = stats;

		s = receive_sums(f_in);
		if (write_batch) /* dw */
		    write_batch_csum_info(&i,flist->count,s);
		if (!s) {
			io_error = 1;
			rprintf(FERROR,"receive_sums failed\n");
			return;
		}
	  
		if (!read_batch) {
		fd = do_open(fname, O_RDONLY, 0);
		if (fd == -1) {
			io_error = 1;
			rprintf(FERROR,"send_files failed to open %s: %s\n",
				fname,strerror(errno));
			free_sums(s);
			continue;
		}
	  
		/* map the local file */
		if (do_fstat(fd,&st) != 0) {
			io_error = 1;
			rprintf(FERROR,"fstat failed : %s\n",strerror(errno));
			free_sums(s);
			close(fd);
			return;
		}
	  
		if (st.st_size > 0) {
			buf = map_file(fd,st.st_size);
		} else {
			buf = NULL;
		}
	  
		if (verbose > 2)
			rprintf(FINFO,"send_files mapped %s of size %.0f\n",
				fname,(double)st.st_size);
		}

		if (!read_batch) { /* dw */
		    write_int(f_out,i);
	  
		    if (write_batch)
			write_batch_delta_file((char *)&i,sizeof(i));

		    write_int(f_out,s->count);
		    write_int(f_out,s->n);
		    write_int(f_out,s->remainder);
		}
	  
		if (verbose > 2)
			if (!read_batch)
			    rprintf(FINFO,"calling match_sums %s\n",fname);
	  
		if (!am_server) {
			log_transfer(file, fname+offset);
		}

		set_compression(fname);

                if (read_batch) { /* dw */
                   /* read checksums originally computed on sender side */
                   read_batch_csum_info(i, s, &checksums_match);
                   if (checksums_match) {
                       read_batch_delta_file( (char *) &j, sizeof(int) );
                       if (j != i) {    /* if flist index entries don't match*/ 
                          rprintf(FINFO,"index mismatch in send_files\n");
                          rprintf(FINFO,"read index = %d flist ndx = %d\n",j,i);
                          close_batch_delta_file();
                          close_batch_csums_file();
                          exit_cleanup(1);
                       }
                       else {
                         write_int(f_out,j);
                         write_int(f_out,s->count);
                         write_int(f_out,s->n);
                         write_int(f_out,s->remainder);
                         done=0;
                         while (!done) {
                            read_batch_delta_file( (char *) &buff_len, sizeof(int) );
                            write_int(f_out,buff_len);
                            if (buff_len == 0) {
                               done = 1;
                            }
                            else {
                               if (buff_len > 0) {
                                  read_batch_delta_file(buff, buff_len);
                                  write_buf(f_out,buff,buff_len);
                               }
                            }
                         }  /* end while  */
                         read_batch_delta_file( buff, MD4_SUM_LENGTH);
                         write_buf(f_out, buff, MD4_SUM_LENGTH);

                       }  /* j=i */
                   } else {  /* not checksum match */
                      rprintf (FINFO,"readbatch & checksums don't match\n");
                      rprintf (FINFO,"filename=%s is being skipped\n",
			       fname);
                      continue;
                   }
                } else  {
		    match_sums(f_out,s,buf,st.st_size);
		    log_send(file, &initial_stats);
                }

		if (!read_batch) { /* dw */
		    if (buf) unmap_file(buf);
		    close(fd);
		}
	  
		free_sums(s);
	  
		if (verbose > 2)
			rprintf(FINFO,"sender finished %s\n",fname);
	}

	if (verbose > 2)
		rprintf(FINFO,"send files finished\n");

	match_report();

	write_int(f_out,-1);
	if (write_batch || read_batch) { /* dw */
	    close_batch_csums_file();
	    close_batch_delta_file();
	}

}
Commit	Line	Data
2f03f956 AT	1	/*
	2	Copyright (C) Andrew Tridgell 1996
	3	Copyright (C) Paul Mackerras 1996
	4
	5	This program is free software; you can redistribute it and/or modify
	6	it under the terms of the GNU General Public License as published by
	7	the Free Software Foundation; either version 2 of the License, or
	8	(at your option) any later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU General Public License for more details.
	14
	15	You should have received a copy of the GNU General Public License
	16	along with this program; if not, write to the Free Software
	17	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	18	*/
	19
	20	#include "rsync.h"
	21
	22	extern int verbose;
	23	extern int remote_version;
	24	extern int csum_length;
	25	extern struct stats stats;
	26	extern int io_error;
	27	extern int dry_run;
	28	extern int am_server;
	29
	30
	31	/*
	32	receive the checksums for a buffer
	33	*/
	34	static struct sum_struct *receive_sums(int f)
	35	{
	36	struct sum_struct *s;
	37	int i;
	38	OFF_T offset = 0;
	39
	40	s = (struct sum_struct )malloc(sizeof(s));
	41	if (!s) out_of_memory("receive_sums");
	42
	43	s->count = read_int(f);
	44	s->n = read_int(f);
	45	s->remainder = read_int(f);
	46	s->sums = NULL;
	47
	48	if (verbose > 3)
	49	rprintf(FINFO,"count=%d n=%d rem=%d\n",
	50	s->count,s->n,s->remainder);
	51
	52	if (s->count == 0)
	53	return(s);
	54
	55	s->sums = (struct sum_buf )malloc(sizeof(s->sums[0])s->count);
	56	if (!s->sums) out_of_memory("receive_sums");
	57
	58	for (i=0;i<s->count;i++) {
	59	s->sums[i].sum1 = read_int(f);
	60	read_buf(f,s->sums[i].sum2,csum_length);
	61
	62	s->sums[i].offset = offset;
	63	s->sums[i].i = i;
	64
65	if (i == s->count-1 && s->remainder != 0) {
66	s->sums[i].len = s->remainder;
67	} else {
68	s->sums[i].len = s->n;
69	}
70	offset += s->sums[i].len;
71
72	if (verbose > 3)
5f808dfb AT	73	rprintf(FINFO,"chunk[%d] len=%d offset=%.0f sum1=%08x\n",
5f808dfb AT	74	i,s->sums[i].len,(double)s->sums[i].offset,s->sums[i].sum1);
2f03f956 AT	75	}
	76
	77	s->flength = offset;
	78
	79	return s;
	80	}
	81
	82
	83
	84	void send_files(struct file_list *flist,int f_out,int f_in)
	85	{
	86	int fd;
	87	struct sum_struct *s;
	88	struct map_struct *buf;
	89	STRUCT_STAT st;
	90	char fname[MAXPATHLEN];
	91	int i;
	92	struct file_struct *file;
	93	int phase = 0;
1b7c47cb AT	94	extern struct stats stats;
1b7c47cb AT	95	struct stats initial_stats;
6902ed17	96	extern int write_batch; /* dw */
6902ed17 MP	97	extern int read_batch; /* dw */
	98	int checksums_match; /* dw */
	99	int buff_len; /* dw */
	100	char buff[CHUNK_SIZE]; /* dw */
	101	int j; /* dw */
	102	int done; /* dw */
2f03f956 AT	103
	104	if (verbose > 2)
	105	rprintf(FINFO,"send_files starting\n");
	106
2f03f956 AT	107	while (1) {
	108	int offset=0;
	109
	110	i = read_int(f_in);
	111	if (i == -1) {
	112	if (phase==0 && remote_version >= 13) {
	113	phase++;
	114	csum_length = SUM_LENGTH;
	115	write_int(f_out,-1);
	116	if (verbose > 2)
	117	rprintf(FINFO,"send_files phase=%d\n",phase);
	118	continue;
	119	}
	120	break;
	121	}
	122
	123	if (i < 0 \|\| i >= flist->count) {
	124	rprintf(FERROR,"Invalid file index %d (count=%d)\n",
	125	i, flist->count);
65417579	126	exit_cleanup(RERR_PROTOCOL);
2f03f956 AT	127	}
	128
	129	file = flist->files[i];
	130
	131	stats.num_transferred_files++;
	132	stats.total_transferred_size += file->length;
	133
	134	fname[0] = 0;
	135	if (file->basedir) {
37f9805d	136	strlcpy(fname,file->basedir,MAXPATHLEN);
2f03f956 AT	137	if (strlen(fname) == MAXPATHLEN-1) {
	138	io_error = 1;
	139	rprintf(FERROR, "send_files failed on long-named directory %s\n",
	140	fname);
	141	return;
	142	}
37f9805d	143	strlcat(fname,"/",MAXPATHLEN);
2f03f956 AT	144	offset = strlen(file->basedir)+1;
2f03f956 AT	145	}
37f9805d	146	strlcat(fname,f_name(file),MAXPATHLEN);
2f03f956 AT	147
	148	if (verbose > 2)
	149	rprintf(FINFO,"send_files(%d,%s)\n",i,fname);
	150
	151	if (dry_run) {
11a5a3c7 AT	152	if (!am_server) {
	153	log_transfer(file, fname+offset);
	154	}
2f03f956 AT	155	write_int(f_out,i);
	156	continue;
	157	}
	158
1b7c47cb AT	159	initial_stats = stats;
1b7c47cb AT	160
2f03f956	161	s = receive_sums(f_in);
6902ed17 MP	162	if (write_batch) /* dw */
6902ed17 MP	163	write_batch_csum_info(&i,flist->count,s);
2f03f956 AT	164	if (!s) {
	165	io_error = 1;
	166	rprintf(FERROR,"receive_sums failed\n");
	167	return;
	168	}
	169
6902ed17	170	if (!read_batch) {
8c9fd200	171	fd = do_open(fname, O_RDONLY, 0);
2f03f956 AT	172	if (fd == -1) {
	173	io_error = 1;
	174	rprintf(FERROR,"send_files failed to open %s: %s\n",
	175	fname,strerror(errno));
	176	free_sums(s);
	177	continue;
	178	}
	179
	180	/* map the local file */
	181	if (do_fstat(fd,&st) != 0) {
	182	io_error = 1;
	183	rprintf(FERROR,"fstat failed : %s\n",strerror(errno));
	184	free_sums(s);
	185	close(fd);
	186	return;
	187	}
	188
	189	if (st.st_size > 0) {
	190	buf = map_file(fd,st.st_size);
	191	} else {
	192	buf = NULL;
	193	}
	194
	195	if (verbose > 2)
5f808dfb AT	196	rprintf(FINFO,"send_files mapped %s of size %.0f\n",
5f808dfb AT	197	fname,(double)st.st_size);
6902ed17	198	}
11a5a3c7	199
6902ed17 MP	200	if (!read_batch) { /* dw */
6902ed17 MP	201	write_int(f_out,i);
2f03f956	202
6902ed17 MP	203	if (write_batch)
	204	write_batch_delta_file((char *)&i,sizeof(i));
	205
	206	write_int(f_out,s->count);
	207	write_int(f_out,s->n);
	208	write_int(f_out,s->remainder);
	209	}
2f03f956 AT	210
2f03f956 AT	211	if (verbose > 2)
6902ed17 MP	212	if (!read_batch)
6902ed17 MP	213	rprintf(FINFO,"calling match_sums %s\n",fname);
2f03f956	214
11a5a3c7 AT	215	if (!am_server) {
	216	log_transfer(file, fname+offset);
	217	}
83fff1aa AT	218
83fff1aa AT	219	set_compression(fname);
1b7c47cb	220
6902ed17 MP	221	if (read_batch) { /* dw */
	222	/* read checksums originally computed on sender side */
	223	read_batch_csum_info(i, s, &checksums_match);
	224	if (checksums_match) {
	225	read_batch_delta_file( (char *) &j, sizeof(int) );
	226	if (j != i) { /* if flist index entries don't match*/
	227	rprintf(FINFO,"index mismatch in send_files\n");
	228	rprintf(FINFO,"read index = %d flist ndx = %d\n",j,i);
	229	close_batch_delta_file();
	230	close_batch_csums_file();
	231	exit_cleanup(1);
	232	}
	233	else {
	234	write_int(f_out,j);
	235	write_int(f_out,s->count);
	236	write_int(f_out,s->n);
	237	write_int(f_out,s->remainder);
	238	done=0;
	239	while (!done) {
	240	read_batch_delta_file( (char *) &buff_len, sizeof(int) );
	241	write_int(f_out,buff_len);
	242	if (buff_len == 0) {
	243	done = 1;
	244	}
	245	else {
	246	if (buff_len > 0) {
	247	read_batch_delta_file(buff, buff_len);
	248	write_buf(f_out,buff,buff_len);
	249	}
	250	}
	251	} /* end while */
	252	read_batch_delta_file( buff, MD4_SUM_LENGTH);
	253	write_buf(f_out, buff, MD4_SUM_LENGTH);
	254
	255	} /* j=i */
	256	} else { /* not checksum match */
07e95008 MP	257	rprintf (FINFO,"readbatch & checksums don't match\n");
	258	rprintf (FINFO,"filename=%s is being skipped\n",
	259	fname);
6902ed17 MP	260	continue;
	261	}
	262	} else {
	263	match_sums(f_out,s,buf,st.st_size);
	264	log_send(file, &initial_stats);
	265	}
	266
	267	if (!read_batch) { /* dw */
	268	if (buf) unmap_file(buf);
	269	close(fd);
	270	}
2f03f956 AT	271
	272	free_sums(s);
	273
	274	if (verbose > 2)
	275	rprintf(FINFO,"sender finished %s\n",fname);
	276	}
	277
	278	if (verbose > 2)
	279	rprintf(FINFO,"send files finished\n");
	280
	281	match_report();
	282
	283	write_int(f_out,-1);
6902ed17 MP	284	if (write_batch \|\| read_batch) { /* dw */
	285	close_batch_csums_file();
	286	close_batch_delta_file();
	287	}
	288
2f03f956 AT	289	}
	290
	291
	292
	293
	294