116 lines
2.4 KiB
C
116 lines
2.4 KiB
C
/*
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* libifupdown/state.c
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* Purpose: state management
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*
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* Copyright (c) 2020 Ariadne Conill <ariadne@dereferenced.org>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* This software is provided 'as is' and without any warranty, express or
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* implied. In no event shall the authors be liable for any damages arising
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* from the use of this software.
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*/
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#include <string.h>
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#include "libifupdown/state.h"
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#include "libifupdown/fgetline.h"
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bool
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lif_state_read(struct lif_dict *state, FILE *fd)
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{
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char linebuf[4096];
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while (lif_fgetline(linebuf, sizeof linebuf, fd))
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{
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char *ifname = linebuf;
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char *equals_p = strchr(linebuf, '=');
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if (equals_p == NULL)
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{
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lif_state_upsert(state, ifname, &(struct lif_interface){ .ifname = ifname });
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continue;
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}
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*equals_p++ = '\0';
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lif_state_upsert(state, ifname, &(struct lif_interface){ .ifname = equals_p });
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}
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return true;
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}
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bool
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lif_state_read_path(struct lif_dict *state, const char *path)
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{
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FILE *fd = fopen(path, "r");
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bool ret;
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if (fd == NULL)
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return false;
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ret = lif_state_read(state, fd);
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fclose(fd);
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return ret;
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}
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void
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lif_state_upsert(struct lif_dict *state, const char *ifname, struct lif_interface *iface)
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{
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lif_dict_add(state, ifname, strdup(iface->ifname));
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}
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void
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lif_state_delete(struct lif_dict *state, const char *ifname)
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{
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struct lif_dict_entry *entry = lif_dict_find(state, ifname);
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if (entry == NULL)
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return;
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free(entry->data);
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lif_dict_delete_entry(state, entry);
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}
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void
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lif_state_write(const struct lif_dict *state, FILE *f)
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{
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struct lif_node *iter;
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LIF_DICT_FOREACH(iter, state)
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{
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struct lif_dict_entry *entry = iter->data;
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fprintf(f, "%s=%s\n", entry->key, (const char *) entry->data);
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}
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}
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bool
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lif_state_write_path(const struct lif_dict *state, const char *path)
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{
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FILE *fd = fopen(path, "w");
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if (fd == NULL)
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return false;
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lif_state_write(state, fd);
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fclose(fd);
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return true;
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}
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struct lif_interface *
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lif_state_lookup(struct lif_dict *state, struct lif_dict *if_collection, const char *ifname)
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{
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struct lif_dict_entry *entry = lif_dict_find(state, ifname);
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if (entry == NULL)
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return NULL;
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struct lif_dict_entry *if_entry = lif_dict_find(if_collection, (const char *) entry->data);
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if (if_entry == NULL)
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return NULL;
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return if_entry->data;
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}
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