irmd: Move registry objects to their own sources

Rename internal data structures so it's clear that they are the IRMd
representation of these objects for management purposes.

Split functionality for these objects off and and move them to their
own source files.

Rename internal functions of the IRMd to reflect this, with some small
refactoring.

Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>

1 files changed, 174 insertions, 0 deletions

diff --git a/src/irmd/reg/prog.c b/src/irmd/reg/prog.c
new file mode 100644
index 00000000..e3fd6105
--- /dev/null
+++ b/src/irmd/reg/prog.c
@@ -0,0 +1,174 @@
+/*
+ * Ouroboros - Copyright (C) 2016 - 2023
+ *
+ * The IPC Resource Manager - Registry - Programs
+ *
+ *    Dimitri Staessens <[email protected]>
+ *    Sander Vrijders   <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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., http://www.fsf.org/about/contact/.
+ */
+
+#if defined(__linux__) || defined(__CYGWIN__)
+#define _DEFAULT_SOURCE
+#else
+#define _POSIX_C_SOURCE 200809L
+#endif
+
+#include <ouroboros/errno.h>
+#include <ouroboros/irm.h>
+#include <ouroboros/utils.h>
+
+#include "prog.h"
+#include "utils.h"
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+
+static char ** create_argv(const char *  prog,
+                           size_t        argc,
+                           char **       argv)
+{
+        char ** argv2;
+        size_t  i;
+
+        argv2 = malloc((argc + 2) * sizeof(*argv2)); /* prog + args + NULL */
+        if (argv2 == 0)
+                goto fail_malloc;
+
+        argv2[0] = strdup(prog);
+        if (argv2[0] == NULL)
+                goto fail_prog;
+
+        for (i = 1; i <= argc; ++i) {
+                argv2[i] = strdup(argv[i - 1]);
+                if (argv2[i] == NULL)
+                        goto fail_arg;
+        }
+
+        argv2[argc + 1] = NULL;
+
+        return argv2;
+
+ fail_arg:
+        argvfree(argv2);
+ fail_prog:
+        free(argv2);
+ fail_malloc:
+        return NULL;
+}
+
+struct reg_prog * reg_prog_create(const char * prog,
+                                  uint32_t     flags,
+                                  int          argc,
+                                  char **      argv)
+{
+        struct reg_prog * p;
+
+        assert(prog);
+
+        p = malloc(sizeof(*p));
+        if (p == NULL)
+                goto fail_malloc;
+
+        memset(p, 0, sizeof(*p));
+
+        p->prog  = strdup(path_strip(prog));
+        if (p->prog == NULL)
+                goto fail_prog;
+
+        if (argc > 0 && flags & BIND_AUTO) {
+                p->argv = create_argv(prog, argc, argv);
+                if (p->argv == NULL)
+                        goto fail_argv;
+        }
+
+        list_head_init(&p->next);
+        list_head_init(&p->names);
+
+        p->flags = flags;
+
+        return p;
+
+ fail_argv:
+        free(p->prog);
+ fail_prog:
+        free(p);
+ fail_malloc:
+        return NULL;
+}
+
+void reg_prog_destroy(struct reg_prog * prog)
+{
+        struct list_head * p;
+        struct list_head * h;
+
+        if (prog == NULL)
+                return;
+
+        list_for_each_safe(p, h, &prog->names) {
+                struct str_el * s = list_entry(p, struct str_el, next);
+                list_del(&s->next);
+                free(s->str);
+                free(s);
+        }
+
+        argvfree(prog->argv);
+        free(prog->prog);
+        free(prog);
+}
+
+int reg_prog_add_name(struct reg_prog * prog,
+                      const char *      name)
+{
+        struct str_el * s;
+
+        if (prog == NULL || name == NULL)
+                return -EINVAL;
+
+        s = malloc(sizeof(*s));
+        if (s == NULL)
+                goto fail_malloc;
+
+        s->str = strdup(name);
+        if(s->str == NULL)
+                goto fail_name;
+
+        list_add(&s->next, &prog->names);
+
+        return 0;
+
+ fail_name:
+        free(s);
+ fail_malloc:
+        return -ENOMEM;
+}
+
+void reg_prog_del_name(struct reg_prog * prog,
+                       const char *      name)
+{
+        struct list_head * p;
+        struct list_head * h;
+
+        list_for_each_safe(p, h, &prog->names) {
+                struct str_el * s = list_entry(p, struct str_el, next);
+                if (!strcmp(name, s->str)) {
+                        list_del(&s->next);
+                        free(s->str);
+                        free(s);
+                }
+        }
+}