1 7b19e0f1 2017-11-05 stsp /*
  2 72bcf0f9 2018-01-12 stsp  * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
  3 7b19e0f1 2017-11-05 stsp  *
  4 7b19e0f1 2017-11-05 stsp  * Permission to use, copy, modify, and distribute this software for any
  5 7b19e0f1 2017-11-05 stsp  * purpose with or without fee is hereby granted, provided that the above
  6 7b19e0f1 2017-11-05 stsp  * copyright notice and this permission notice appear in all copies.
  7 7b19e0f1 2017-11-05 stsp  *
  8 7b19e0f1 2017-11-05 stsp  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 7b19e0f1 2017-11-05 stsp  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 7b19e0f1 2017-11-05 stsp  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 7b19e0f1 2017-11-05 stsp  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 7b19e0f1 2017-11-05 stsp  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 7b19e0f1 2017-11-05 stsp  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 7b19e0f1 2017-11-05 stsp  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 7b19e0f1 2017-11-05 stsp  */
 16 7b19e0f1 2017-11-05 stsp 
 17 91a3d81f 2018-11-11 stsp #include <sys/queue.h>
 18 91a3d81f 2018-11-11 stsp 
 19 f334529e 2018-01-12 stsp #include <errno.h>
 20 7d45c7f1 2019-05-15 stsp #include <limits.h>
 21 8251fdbc 2018-01-12 stsp #include <stdio.h>
 22 f334529e 2018-01-12 stsp #include <stdlib.h>
 23 f334529e 2018-01-12 stsp #include <string.h>
 24 91a3d81f 2018-11-11 stsp #include <sha1.h>
 25 91a3d81f 2018-11-11 stsp #include <zlib.h>
 26 09589288 2019-03-10 stsp #include <uuid.h>
 27 f334529e 2018-01-12 stsp 
 28 4027f31a 2017-11-04 stsp #include "got_error.h"
 29 91a3d81f 2018-11-11 stsp #include "got_object.h"
 30 4027f31a 2017-11-04 stsp 
 31 91a3d81f 2018-11-11 stsp #include "got_lib_delta.h"
 32 91a3d81f 2018-11-11 stsp #include "got_lib_inflate.h"
 33 91a3d81f 2018-11-11 stsp #include "got_lib_object.h"
 34 91a3d81f 2018-11-11 stsp #include "got_lib_sha1.h"
 35 91a3d81f 2018-11-11 stsp 
 36 2b4402a2 2017-11-05 stsp #ifndef nitems
 37 2b4402a2 2017-11-05 stsp #define nitems(_a) (sizeof(_a) / sizeof((_a)[0]))
 38 2b4402a2 2017-11-05 stsp #endif
 39 4027f31a 2017-11-04 stsp 
 40 4027f31a 2017-11-04 stsp const struct got_error *
 41 4027f31a 2017-11-04 stsp got_error(int code)
 42 4027f31a 2017-11-04 stsp {
 43 4027f31a 2017-11-04 stsp 	int i;
 44 4027f31a 2017-11-04 stsp 
 45 4027f31a 2017-11-04 stsp 	for (i = 0; i < nitems(got_errors); i++) {
 46 4027f31a 2017-11-04 stsp 		if (code == got_errors[i].code)
 47 4027f31a 2017-11-04 stsp 			return &got_errors[i];
 48 4027f31a 2017-11-04 stsp 	}
 49 4027f31a 2017-11-04 stsp 
 50 f334529e 2018-01-12 stsp 	abort();
 51 4027f31a 2017-11-04 stsp }
 52 f334529e 2018-01-12 stsp 
 53 f334529e 2018-01-12 stsp const struct got_error *
 54 91a3d81f 2018-11-11 stsp got_error_msg(int code, const char *msg)
 55 91a3d81f 2018-11-11 stsp {
 56 91a3d81f 2018-11-11 stsp 	static struct got_error err;
 57 91a3d81f 2018-11-11 stsp 	int i;
 58 91a3d81f 2018-11-11 stsp 
 59 91a3d81f 2018-11-11 stsp 	for (i = 0; i < nitems(got_errors); i++) {
 60 91a3d81f 2018-11-11 stsp 		if (code == got_errors[i].code) {
 61 91a3d81f 2018-11-11 stsp 			err.code = code;
 62 91a3d81f 2018-11-11 stsp 			err.msg = msg;
 63 8fa9fd14 2018-11-11 stsp 			return &err;
 64 91a3d81f 2018-11-11 stsp 		}
 65 91a3d81f 2018-11-11 stsp 	}
 66 91a3d81f 2018-11-11 stsp 
 67 91a3d81f 2018-11-11 stsp 	abort();
 68 91a3d81f 2018-11-11 stsp }
 69 91a3d81f 2018-11-11 stsp 
 70 91a3d81f 2018-11-11 stsp const struct got_error *
 71 638f9024 2019-05-13 stsp got_error_from_errno(const char *prefix)
 72 f334529e 2018-01-12 stsp {
 73 f334529e 2018-01-12 stsp 	static struct got_error err;
 74 7d45c7f1 2019-05-15 stsp 	static char err_msg[PATH_MAX + 20];
 75 f334529e 2018-01-12 stsp 
 76 230a42bd 2019-05-11 jcs 	snprintf(err_msg, sizeof(err_msg), "%s: %s", prefix,
 77 230a42bd 2019-05-11 jcs 	    strerror(errno));
 78 230a42bd 2019-05-11 jcs 
 79 f334529e 2018-01-12 stsp 	err.code = GOT_ERR_ERRNO;
 80 230a42bd 2019-05-11 jcs 	err.msg = err_msg;
 81 f334529e 2018-01-12 stsp 	return &err;
 82 f334529e 2018-01-12 stsp }
 83 8251fdbc 2018-01-12 stsp 
 84 8251fdbc 2018-01-12 stsp const struct got_error *
 85 638f9024 2019-05-13 stsp got_error_from_errno2(const char *prefix, const char *prefix2)
 86 48b8b0eb 2019-05-11 jcs {
 87 48b8b0eb 2019-05-11 jcs 	static struct got_error err;
 88 7d45c7f1 2019-05-15 stsp 	static char err_msg[(PATH_MAX * 2) + 20];
 89 48b8b0eb 2019-05-11 jcs 
 90 230a42bd 2019-05-11 jcs 	snprintf(err_msg, sizeof(err_msg), "%s: %s: %s", prefix, prefix2,
 91 48b8b0eb 2019-05-11 jcs 	    strerror(errno));
 92 48b8b0eb 2019-05-11 jcs 
 93 48b8b0eb 2019-05-11 jcs 	err.code = GOT_ERR_ERRNO;
 94 48b8b0eb 2019-05-11 jcs 	err.msg = err_msg;
 95 48b8b0eb 2019-05-11 jcs 	return &err;
 96 48b8b0eb 2019-05-11 jcs }
 97 48b8b0eb 2019-05-11 jcs 
 98 48b8b0eb 2019-05-11 jcs const struct got_error *
 99 638f9024 2019-05-13 stsp got_error_from_errno3(const char *prefix, const char *prefix2,
100 230a42bd 2019-05-11 jcs     const char *prefix3)
101 230a42bd 2019-05-11 jcs {
102 230a42bd 2019-05-11 jcs 	static struct got_error err;
103 7d45c7f1 2019-05-15 stsp 	static char err_msg[(PATH_MAX * 3) + 20];
104 230a42bd 2019-05-11 jcs 
105 230a42bd 2019-05-11 jcs 	snprintf(err_msg, sizeof(err_msg), "%s: %s: %s: %s", prefix, prefix2,
106 230a42bd 2019-05-11 jcs 	    prefix3, strerror(errno));
107 230a42bd 2019-05-11 jcs 
108 230a42bd 2019-05-11 jcs 	err.code = GOT_ERR_ERRNO;
109 230a42bd 2019-05-11 jcs 	err.msg = err_msg;
110 230a42bd 2019-05-11 jcs 	return &err;
111 230a42bd 2019-05-11 jcs }
112 230a42bd 2019-05-11 jcs 
113 230a42bd 2019-05-11 jcs const struct got_error *
114 2af4a041 2019-05-11 jcs got_error_set_errno(int code, const char *prefix)
115 1a76625f 2018-10-22 stsp {
116 1a76625f 2018-10-22 stsp 	errno = code;
117 638f9024 2019-05-13 stsp 	return got_error_from_errno(prefix);
118 1a76625f 2018-10-22 stsp }
119 1a76625f 2018-10-22 stsp 
120 1a76625f 2018-10-22 stsp const struct got_error *
121 8251fdbc 2018-01-12 stsp got_ferror(FILE *f, int code)
122 8251fdbc 2018-01-12 stsp {
123 8251fdbc 2018-01-12 stsp 	if (ferror(f))
124 638f9024 2019-05-13 stsp 		return got_error_from_errno("");
125 8251fdbc 2018-01-12 stsp 	return got_error(code);
126 8251fdbc 2018-01-12 stsp }
127 91a3d81f 2018-11-11 stsp 
128 91a3d81f 2018-11-11 stsp const struct got_error *
129 91a3d81f 2018-11-11 stsp got_error_no_obj(struct got_object_id *id)
130 91a3d81f 2018-11-11 stsp {
131 91a3d81f 2018-11-11 stsp 	static char msg[sizeof("object   not found") +
132 91a3d81f 2018-11-11 stsp 	    SHA1_DIGEST_STRING_LENGTH];
133 91a3d81f 2018-11-11 stsp 	char id_str[SHA1_DIGEST_STRING_LENGTH];
134 91a3d81f 2018-11-11 stsp 	int ret;
135 91a3d81f 2018-11-11 stsp 
136 91a3d81f 2018-11-11 stsp 	if (!got_sha1_digest_to_str(id->sha1, id_str, sizeof(id_str)))
137 91a3d81f 2018-11-11 stsp 		return got_error(GOT_ERR_NO_OBJ);
138 91a3d81f 2018-11-11 stsp 
139 91a3d81f 2018-11-11 stsp 	ret = snprintf(msg, sizeof(msg), "object %s not found", id_str);
140 91a3d81f 2018-11-11 stsp 	if (ret == -1 || ret >= sizeof(msg))
141 91a3d81f 2018-11-11 stsp 		return got_error(GOT_ERR_NO_OBJ);
142 91a3d81f 2018-11-11 stsp 
143 91a3d81f 2018-11-11 stsp 	return got_error_msg(GOT_ERR_NO_OBJ, msg);
144 91a3d81f 2018-11-11 stsp }
145 2aa0475c 2019-02-03 stsp 
146 2aa0475c 2019-02-03 stsp const struct got_error *
147 2aa0475c 2019-02-03 stsp got_error_not_ref(const char *refname)
148 2aa0475c 2019-02-03 stsp {
149 2aa0475c 2019-02-03 stsp 	static char msg[sizeof("reference   not found") + 1004];
150 2aa0475c 2019-02-03 stsp 	int ret;
151 2aa0475c 2019-02-03 stsp 
152 2aa0475c 2019-02-03 stsp 	ret = snprintf(msg, sizeof(msg), "reference %s not found", refname);
153 2aa0475c 2019-02-03 stsp 	if (ret == -1 || ret >= sizeof(msg))
154 2aa0475c 2019-02-03 stsp 		return got_error(GOT_ERR_NOT_REF);
155 2aa0475c 2019-02-03 stsp 
156 2aa0475c 2019-02-03 stsp 	return got_error_msg(GOT_ERR_NOT_REF, msg);
157 2aa0475c 2019-02-03 stsp }
158 09589288 2019-03-10 stsp 
159 09589288 2019-03-10 stsp const struct got_error *
160 cc483380 2019-09-01 stsp got_error_uuid(uint32_t uuid_status, const char *prefix)
161 09589288 2019-03-10 stsp {
162 09589288 2019-03-10 stsp 	switch (uuid_status) {
163 09589288 2019-03-10 stsp 	case uuid_s_ok:
164 09589288 2019-03-10 stsp 		return NULL;
165 09589288 2019-03-10 stsp 	case uuid_s_bad_version:
166 09589288 2019-03-10 stsp 		return got_error(GOT_ERR_UUID_VERSION);
167 09589288 2019-03-10 stsp 	case uuid_s_invalid_string_uuid:
168 09589288 2019-03-10 stsp 		return got_error(GOT_ERR_UUID_INVALID);
169 09589288 2019-03-10 stsp 	case uuid_s_no_memory:
170 cc483380 2019-09-01 stsp 		return got_error_set_errno(ENOMEM, prefix);
171 09589288 2019-03-10 stsp 	default:
172 09589288 2019-03-10 stsp 		return got_error(GOT_ERR_UUID);
173 09589288 2019-03-10 stsp 	}
174 09589288 2019-03-10 stsp }
175 df056ada 2019-05-15 stsp 
176 df056ada 2019-05-15 stsp const struct got_error *
177 df056ada 2019-05-15 stsp got_error_path(const char *path, int code)
178 df056ada 2019-05-15 stsp {
179 df056ada 2019-05-15 stsp 	static struct got_error err;
180 7d45c7f1 2019-05-15 stsp 	static char msg[PATH_MAX + 128];
181 df056ada 2019-05-15 stsp 	int i;
182 df056ada 2019-05-15 stsp 
183 df056ada 2019-05-15 stsp 	for (i = 0; i < nitems(got_errors); i++) {
184 df056ada 2019-05-15 stsp 		if (code == got_errors[i].code) {
185 df056ada 2019-05-15 stsp 			err.code = code;
186 df056ada 2019-05-15 stsp 			snprintf(msg, sizeof(msg), "%s: %s", path,
187 df056ada 2019-05-15 stsp 			    got_errors[i].msg);
188 df056ada 2019-05-15 stsp 			err.msg = msg;
189 df056ada 2019-05-15 stsp 			return &err;
190 df056ada 2019-05-15 stsp 		}
191 df056ada 2019-05-15 stsp 	}
192 df056ada 2019-05-15 stsp 
193 df056ada 2019-05-15 stsp 	abort();
194 df056ada 2019-05-15 stsp }