mirror of https://github.com/pygos/pkg-utils.git
81 lines
1.7 KiB
C
81 lines
1.7 KiB
C
/* SPDX-License-Identifier: ISC */
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include "pkg/pkgreader.h"
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#include "pkg/pkglist.h"
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int collect_dependencies(int repofd, struct pkg_dep_list *list)
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{
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struct pkg_dep_node *it;
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pkg_dependency_t dep;
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uint8_t buffer[257];
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pkg_reader_t *rd;
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pkg_header_t hdr;
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size_t i;
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int ret;
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for (it = list->head; it != NULL; it = it->next) {
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rd = pkg_reader_open_repo(repofd, it->name);
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if (rd == NULL)
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return -1;
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ret = pkg_reader_read_payload(rd, &hdr, sizeof(hdr));
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if (ret < 0)
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goto fail;
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if ((size_t)ret < sizeof(hdr))
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goto fail_trunc;
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it->num_deps = le16toh(hdr.num_depends);
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it->deps = calloc(sizeof(it->deps[0]), it->num_deps);
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if (it->deps == NULL)
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goto fail_oom;
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for (i = 0; i < it->num_deps; ++i) {
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ret = pkg_reader_read_payload(rd, &dep, sizeof(dep));
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if (ret < 0)
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goto fail;
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if ((size_t)ret < sizeof(hdr))
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goto fail_trunc;
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ret = pkg_reader_read_payload(rd, buffer,
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dep.name_length);
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if (ret < 0)
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goto fail;
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if ((size_t)ret < dep.name_length)
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goto fail_trunc;
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buffer[dep.name_length] = '\0';
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if (strcmp((char *)buffer, it->name) == 0) {
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fprintf(stderr,
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"%s: package depends on itself\n",
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it->name);
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goto fail;
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}
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it->deps[i] = find_pkg(list, (char *)buffer);
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if (it->deps[i] == NULL) {
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it->deps[i] = append_pkg(list, (char *)buffer);
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if (it->deps[i] == NULL)
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goto fail;
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}
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}
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pkg_reader_close(rd);
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}
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return 0;
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fail_trunc:
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fprintf(stderr, "%s: truncated header record\n",
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pkg_reader_get_filename(rd));
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goto fail;
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fail_oom:
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fputs("out of memory\n", stderr);
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goto fail;
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fail:
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pkg_reader_close(rd);
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return -1;
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}
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