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portable: initial Linux compilation This commit modifies the GoT main branch to be able to compile it under linux.
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  1 2181e0c8 2019-03-19 stsp /*

  2 2181e0c8 2019-03-19 stsp  * Copyright (c) 2019 Stefan Sperling <stsp@openbsd.org>

  3 2181e0c8 2019-03-19 stsp  *

  4 2181e0c8 2019-03-19 stsp  * Permission to use, copy, modify, and distribute this software for any

  5 2181e0c8 2019-03-19 stsp  * purpose with or without fee is hereby granted, provided that the above

  6 2181e0c8 2019-03-19 stsp  * copyright notice and this permission notice appear in all copies.

  7 2181e0c8 2019-03-19 stsp  *

  8 2181e0c8 2019-03-19 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES

  9 2181e0c8 2019-03-19 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF

 10 2181e0c8 2019-03-19 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR

 11 2181e0c8 2019-03-19 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

 12 2181e0c8 2019-03-19 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN

 13 2181e0c8 2019-03-19 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF

 14 2181e0c8 2019-03-19 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

 15 2181e0c8 2019-03-19 stsp  */

 16 2181e0c8 2019-03-19 stsp 

 17 2181e0c8 2019-03-19 stsp 

 18 2181e0c8 2019-03-19 stsp #include <errno.h>

 19 2181e0c8 2019-03-19 stsp #include <stdio.h>

 20 2181e0c8 2019-03-19 stsp #include <stdlib.h>

 21 2181e0c8 2019-03-19 stsp #include <string.h>

 22 2181e0c8 2019-03-19 stsp #include <sha1.h>

 23 2181e0c8 2019-03-19 stsp #include <zlib.h>

 24 2181e0c8 2019-03-19 stsp #include <time.h>

 25 2181e0c8 2019-03-19 stsp 

 26 2181e0c8 2019-03-19 stsp #include "got_error.h"

 27 2181e0c8 2019-03-19 stsp #include "got_object.h"

 28 324d37e7 2019-05-11 stsp #include "got_path.h"

 29 2181e0c8 2019-03-19 stsp 

 30 2181e0c8 2019-03-19 stsp #include "got_lib_deflate.h"

 31 2181e0c8 2019-03-19 stsp 

 32 2181e0c8 2019-03-19 stsp #ifndef MIN

 33 2181e0c8 2019-03-19 stsp #define	MIN(_a,_b) ((_a) < (_b) ? (_a) : (_b))

 34 2181e0c8 2019-03-19 stsp #endif

 35 2181e0c8 2019-03-19 stsp 

 36 2181e0c8 2019-03-19 stsp const struct got_error *

 37 3b9e6fcf 2021-06-05 stsp got_deflate_init(struct got_deflate_buf *zb, uint8_t *outbuf, size_t bufsize)

 38 2181e0c8 2019-03-19 stsp {

 39 2181e0c8 2019-03-19 stsp 	const struct got_error *err = NULL;

 40 2181e0c8 2019-03-19 stsp 	int zerr;

 41 2181e0c8 2019-03-19 stsp 

 42 2181e0c8 2019-03-19 stsp 	memset(&zb->z, 0, sizeof(zb->z));

 43 2181e0c8 2019-03-19 stsp 

 44 2181e0c8 2019-03-19 stsp 	zb->z.zalloc = Z_NULL;

 45 2181e0c8 2019-03-19 stsp 	zb->z.zfree = Z_NULL;

 46 2181e0c8 2019-03-19 stsp 	zerr = deflateInit(&zb->z, Z_DEFAULT_COMPRESSION);

 47 2181e0c8 2019-03-19 stsp 	if (zerr != Z_OK) {

 48 2181e0c8 2019-03-19 stsp 		if  (zerr == Z_ERRNO)

 49 638f9024 2019-05-13 stsp 			return got_error_from_errno("deflateInit");

 50 2181e0c8 2019-03-19 stsp 		if  (zerr == Z_MEM_ERROR) {

 51 2181e0c8 2019-03-19 stsp 			errno = ENOMEM;

 52 638f9024 2019-05-13 stsp 			return got_error_from_errno("deflateInit");

 53 2181e0c8 2019-03-19 stsp 		}

 54 2181e0c8 2019-03-19 stsp 		return got_error(GOT_ERR_COMPRESSION);

 55 2181e0c8 2019-03-19 stsp 	}

 56 2181e0c8 2019-03-19 stsp 

 57 2181e0c8 2019-03-19 stsp 	zb->inlen = zb->outlen = bufsize;

 58 2181e0c8 2019-03-19 stsp 

 59 2181e0c8 2019-03-19 stsp 	zb->inbuf = calloc(1, zb->inlen);

 60 2181e0c8 2019-03-19 stsp 	if (zb->inbuf == NULL) {

 61 638f9024 2019-05-13 stsp 		err = got_error_from_errno("calloc");

 62 2181e0c8 2019-03-19 stsp 		goto done;

 63 2181e0c8 2019-03-19 stsp 	}

 64 2181e0c8 2019-03-19 stsp 

 65 2181e0c8 2019-03-19 stsp 	zb->flags = 0;

 66 2181e0c8 2019-03-19 stsp 	if (outbuf == NULL) {

 67 2181e0c8 2019-03-19 stsp 		zb->outbuf = calloc(1, zb->outlen);

 68 2181e0c8 2019-03-19 stsp 		if (zb->outbuf == NULL) {

 69 638f9024 2019-05-13 stsp 			err = got_error_from_errno("calloc");

 70 2181e0c8 2019-03-19 stsp 			goto done;

 71 2181e0c8 2019-03-19 stsp 		}

 72 2181e0c8 2019-03-19 stsp 		zb->flags |= GOT_DEFLATE_F_OWN_OUTBUF;

 73 2181e0c8 2019-03-19 stsp 	} else

 74 2181e0c8 2019-03-19 stsp 		zb->outbuf = outbuf;

 75 2181e0c8 2019-03-19 stsp done:

 76 2181e0c8 2019-03-19 stsp 	if (err)

 77 2181e0c8 2019-03-19 stsp 		got_deflate_end(zb);

 78 2181e0c8 2019-03-19 stsp 	return err;

 79 2181e0c8 2019-03-19 stsp }

 80 2181e0c8 2019-03-19 stsp 

 81 91b40e30 2021-05-21 stsp static void

 82 91b40e30 2021-05-21 stsp csum_output(struct got_deflate_checksum *csum, const char *buf, size_t len)

 83 91b40e30 2021-05-21 stsp {

 84 91b40e30 2021-05-21 stsp 	if (csum->output_crc)

 85 91b40e30 2021-05-21 stsp 		*csum->output_crc = crc32(*csum->output_crc, buf, len);

 86 91b40e30 2021-05-21 stsp 

 87 91b40e30 2021-05-21 stsp 	if (csum->output_sha1)

 88 91b40e30 2021-05-21 stsp 		SHA1Update(csum->output_sha1, buf, len);

 89 91b40e30 2021-05-21 stsp }

 90 91b40e30 2021-05-21 stsp 

 91 2181e0c8 2019-03-19 stsp const struct got_error *

 92 2181e0c8 2019-03-19 stsp got_deflate_read(struct got_deflate_buf *zb, FILE *f, size_t *outlenp)

 93 2181e0c8 2019-03-19 stsp {

 94 2181e0c8 2019-03-19 stsp 	size_t last_total_out = zb->z.total_out;

 95 2181e0c8 2019-03-19 stsp 	z_stream *z = &zb->z;

 96 2181e0c8 2019-03-19 stsp 	int ret = Z_ERRNO;

 97 2181e0c8 2019-03-19 stsp 

 98 2181e0c8 2019-03-19 stsp 	z->next_out = zb->outbuf;

 99 2181e0c8 2019-03-19 stsp 	z->avail_out = zb->outlen;

100 2181e0c8 2019-03-19 stsp 

101 2181e0c8 2019-03-19 stsp 	*outlenp = 0;

102 2181e0c8 2019-03-19 stsp 	do {

103 2181e0c8 2019-03-19 stsp 		if (z->avail_in == 0) {

104 2181e0c8 2019-03-19 stsp 			size_t n = fread(zb->inbuf, 1, zb->inlen, f);

105 2181e0c8 2019-03-19 stsp 			if (n == 0) {

106 2181e0c8 2019-03-19 stsp 				if (ferror(f))

107 2181e0c8 2019-03-19 stsp 					return got_ferror(f, GOT_ERR_IO);

108 2181e0c8 2019-03-19 stsp 				/* EOF */

109 4e4a7005 2019-04-13 stsp 				ret = deflate(z, Z_FINISH);

110 2181e0c8 2019-03-19 stsp 				break;

111 2181e0c8 2019-03-19 stsp 			}

112 2181e0c8 2019-03-19 stsp 			z->next_in = zb->inbuf;

113 2181e0c8 2019-03-19 stsp 			z->avail_in = n;

114 2181e0c8 2019-03-19 stsp 		}

115 2181e0c8 2019-03-19 stsp 		ret = deflate(z, Z_NO_FLUSH);

116 2181e0c8 2019-03-19 stsp 	} while (ret == Z_OK && z->avail_out > 0);

117 2181e0c8 2019-03-19 stsp 

118 2181e0c8 2019-03-19 stsp 	if (ret == Z_OK) {

119 2181e0c8 2019-03-19 stsp 		zb->flags |= GOT_DEFLATE_F_HAVE_MORE;

120 2181e0c8 2019-03-19 stsp 	} else {

121 2181e0c8 2019-03-19 stsp 		if (ret != Z_STREAM_END)

122 2181e0c8 2019-03-19 stsp 			return got_error(GOT_ERR_COMPRESSION);

123 2181e0c8 2019-03-19 stsp 		zb->flags &= ~GOT_DEFLATE_F_HAVE_MORE;

124 2181e0c8 2019-03-19 stsp 	}

125 2181e0c8 2019-03-19 stsp 

126 2181e0c8 2019-03-19 stsp 	*outlenp = z->total_out - last_total_out;

127 2181e0c8 2019-03-19 stsp 	return NULL;

128 2181e0c8 2019-03-19 stsp }

129 2181e0c8 2019-03-19 stsp 

130 2181e0c8 2019-03-19 stsp void

131 2181e0c8 2019-03-19 stsp got_deflate_end(struct got_deflate_buf *zb)

132 2181e0c8 2019-03-19 stsp {

133 2181e0c8 2019-03-19 stsp 	free(zb->inbuf);

134 2181e0c8 2019-03-19 stsp 	if (zb->flags & GOT_DEFLATE_F_OWN_OUTBUF)

135 2181e0c8 2019-03-19 stsp 		free(zb->outbuf);

136 2181e0c8 2019-03-19 stsp 	deflateEnd(&zb->z);

137 2181e0c8 2019-03-19 stsp }

138 2181e0c8 2019-03-19 stsp 

139 2181e0c8 2019-03-19 stsp const struct got_error *

140 91b40e30 2021-05-21 stsp got_deflate_to_file(size_t *outlen, FILE *infile, FILE *outfile,

141 91b40e30 2021-05-21 stsp     struct got_deflate_checksum *csum)

142 2181e0c8 2019-03-19 stsp {

143 2181e0c8 2019-03-19 stsp 	const struct got_error *err;

144 2181e0c8 2019-03-19 stsp 	size_t avail;

145 2181e0c8 2019-03-19 stsp 	struct got_deflate_buf zb;

146 2181e0c8 2019-03-19 stsp 

147 3b9e6fcf 2021-06-05 stsp 	err = got_deflate_init(&zb, NULL, GOT_DEFLATE_BUFSIZE);

148 2181e0c8 2019-03-19 stsp 	if (err)

149 2181e0c8 2019-03-19 stsp 		goto done;

150 2181e0c8 2019-03-19 stsp 

151 2181e0c8 2019-03-19 stsp 	*outlen = 0;

152 2181e0c8 2019-03-19 stsp 

153 2181e0c8 2019-03-19 stsp 	do {

154 2181e0c8 2019-03-19 stsp 		err = got_deflate_read(&zb, infile, &avail);

155 2181e0c8 2019-03-19 stsp 		if (err)

156 2181e0c8 2019-03-19 stsp 			goto done;

157 2181e0c8 2019-03-19 stsp 		if (avail > 0) {

158 2181e0c8 2019-03-19 stsp 			size_t n;

159 2181e0c8 2019-03-19 stsp 			n = fwrite(zb.outbuf, avail, 1, outfile);

160 2181e0c8 2019-03-19 stsp 			if (n != 1) {

161 2181e0c8 2019-03-19 stsp 				err = got_ferror(outfile, GOT_ERR_IO);

162 2181e0c8 2019-03-19 stsp 				goto done;

163 2181e0c8 2019-03-19 stsp 			}

164 3b9e6fcf 2021-06-05 stsp 			if (csum)

165 3b9e6fcf 2021-06-05 stsp 				csum_output(csum, zb.outbuf, avail);

166 2181e0c8 2019-03-19 stsp 			*outlen += avail;

167 2181e0c8 2019-03-19 stsp 		}

168 2181e0c8 2019-03-19 stsp 	} while (zb.flags & GOT_DEFLATE_F_HAVE_MORE);

169 2181e0c8 2019-03-19 stsp 

170 2181e0c8 2019-03-19 stsp done:

171 2181e0c8 2019-03-19 stsp 	got_deflate_end(&zb);

172 2181e0c8 2019-03-19 stsp 	return err;

173 2181e0c8 2019-03-19 stsp }