Small utility collection for dealing with file archives that have dependencies
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/* SPDX-License-Identifier: ISC */
#include "install.h"
int collect_dependencies(int repofd, struct pkg_dep_list *list)
{
struct pkg_dep_node *it;
pkg_dependency_t dep;
uint8_t buffer[257];
pkg_reader_t *rd;
pkg_header_t hdr;
size_t i;
int ret;
for (it = list->head; it != NULL; it = it->next) {
rd = pkg_reader_open_repo(repofd, it->name);
if (rd == NULL)
return -1;
ret = pkg_reader_read_payload(rd, &hdr, sizeof(hdr));
if (ret < 0)
goto fail;
if ((size_t)ret < sizeof(hdr))
goto fail_trunc;
it->num_deps = le16toh(hdr.num_depends);
it->deps = calloc(sizeof(it->deps[0]), it->num_deps);
if (it->deps == NULL)
goto fail_oom;
for (i = 0; i < it->num_deps; ++i) {
ret = pkg_reader_read_payload(rd, &dep, sizeof(dep));
if (ret < 0)
goto fail;
if ((size_t)ret < sizeof(hdr))
goto fail_trunc;
ret = pkg_reader_read_payload(rd, buffer,
dep.name_length);
if (ret < 0)
goto fail;
if ((size_t)ret < dep.name_length)
goto fail_trunc;
buffer[dep.name_length] = '\0';
if (strcmp((char *)buffer, it->name) == 0) {
fprintf(stderr,
"%s: package depends on itself\n",
it->name);
goto fail;
}
it->deps[i] = find_pkg(list, (char *)buffer);
if (it->deps[i] == NULL) {
it->deps[i] = append_pkg(list, (char *)buffer);
if (it->deps[i] == NULL)
goto fail;
}
}
pkg_reader_close(rd);
}
return 0;
fail_trunc:
fprintf(stderr, "%s: truncated header record\n",
pkg_reader_get_filename(rd));
goto fail;
fail_oom:
fputs("out of memory\n", stderr);
goto fail;
fail:
pkg_reader_close(rd);
return -1;
}