mirror of
https://git.proxmox.com/git/grub2
synced 2025-11-04 09:14:22 +00:00
cd46aa6cef
the function of these files exceeds what can be sanely handled in shell in posix-comaptible way. Also writing it in C extends the functionality to non-UNIX-like OS and minimal environments.
113 lines
2.4 KiB
C
113 lines
2.4 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2013 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <string.h>
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#include <grub/emu/config.h>
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#include <grub/util/misc.h>
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void
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grub_util_parse_config (FILE *f, struct grub_util_config *cfg, int simple)
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{
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char *buffer = NULL;
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size_t sz = 0;
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while (getline (&buffer, &sz, f) >= 0)
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{
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const char *ptr;
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for (ptr = buffer; *ptr && grub_isspace (*ptr); ptr++);
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if (grub_strncmp (ptr, "GRUB_ENABLE_CRYPTODISK=",
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sizeof ("GRUB_ENABLE_CRYPTODISK=") - 1) == 0)
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{
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ptr += sizeof ("GRUB_ENABLE_CRYPTODISK=") - 1;
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if (*ptr == '"' || *ptr == '\'')
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ptr++;
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if (*ptr == 'y')
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cfg->is_cryptodisk_enabled = 1;
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continue;
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}
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if (grub_strncmp (ptr, "GRUB_DISTRIBUTOR=",
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sizeof ("GRUB_DISTRIBUTOR=") - 1) == 0)
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{
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char *optr;
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enum { NONE, SNGLQUOT, DBLQUOT } state;
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if (simple)
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{
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free (cfg->grub_distributor);
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cfg->grub_distributor = xstrdup (ptr);
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continue;
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}
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free (cfg->grub_distributor);
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cfg->grub_distributor = xmalloc (strlen (ptr) + 1);
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optr = cfg->grub_distributor;
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state = NONE;
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for (; *ptr; ptr++)
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switch (*ptr)
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{
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case '\\':
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if (state == SNGLQUOT)
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{
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*optr++ = *ptr;
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continue;
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}
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if (ptr[1])
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{
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*optr++ = ptr[1];
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ptr++;
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continue;
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}
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ptr++;
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break;
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case '"':
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if (state == NONE)
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{
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state = DBLQUOT;
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continue;
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}
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if (state == DBLQUOT)
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{
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state = NONE;
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continue;
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}
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*optr++ = *ptr;
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continue;
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case '\'':
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if (state == SNGLQUOT)
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{
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state = NONE;
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continue;
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}
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if (state == NONE)
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{
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state = SNGLQUOT;
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continue;
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}
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*optr++ = *ptr;
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continue;
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default:
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*optr++ = *ptr;
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continue;
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}
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*optr = '\0';
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}
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}
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}
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