83 lines
2.5 KiB
Diff
83 lines
2.5 KiB
Diff
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From 0fe5a234240a108b294a87174ad197f6b5cb38e9 Mon Sep 17 00:00:00 2001
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From: Paul Stewart <pstew@google.com>
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Date: Thu, 3 Mar 2016 15:40:19 -0800
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Subject: [PATCH 3/5] Remove newlines from wpa_supplicant config network
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output
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Spurious newlines output while writing the config file can corrupt the
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wpa_supplicant configuration. Avoid writing these for the network block
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parameters. This is a generic filter that cover cases that may not have
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been explicitly addressed with a more specific commit to avoid control
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characters in the psk parameter.
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Signed-off-by: Paul Stewart <pstew@google.com>
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---
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src/utils/common.c | 11 +++++++++++
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src/utils/common.h | 1 +
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wpa_supplicant/config.c | 15 +++++++++++++--
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3 files changed, 25 insertions(+), 2 deletions(-)
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diff --git a/src/utils/common.c b/src/utils/common.c
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index 27b7c02..9856463 100644
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--- a/src/utils/common.c
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+++ b/src/utils/common.c
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@@ -709,6 +709,17 @@ int has_ctrl_char(const u8 *data, size_t len)
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}
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+int has_newline(const char *str)
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+{
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+ while (*str) {
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+ if (*str == '\n' || *str == '\r')
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+ return 1;
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+ str++;
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+ }
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+ return 0;
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+}
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+
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+
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size_t merge_byte_arrays(u8 *res, size_t res_len,
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const u8 *src1, size_t src1_len,
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const u8 *src2, size_t src2_len)
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diff --git a/src/utils/common.h b/src/utils/common.h
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index a972240..d19927b 100644
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--- a/src/utils/common.h
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+++ b/src/utils/common.h
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@@ -489,6 +489,7 @@ const char * wpa_ssid_txt(const u8 *ssid, size_t ssid_len);
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char * wpa_config_parse_string(const char *value, size_t *len);
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int is_hex(const u8 *data, size_t len);
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int has_ctrl_char(const u8 *data, size_t len);
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+int has_newline(const char *str);
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size_t merge_byte_arrays(u8 *res, size_t res_len,
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const u8 *src1, size_t src1_len,
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const u8 *src2, size_t src2_len);
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diff --git a/wpa_supplicant/config.c b/wpa_supplicant/config.c
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index fdd9643..eb97cd5 100644
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--- a/wpa_supplicant/config.c
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+++ b/wpa_supplicant/config.c
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@@ -2699,8 +2699,19 @@ char * wpa_config_get(struct wpa_ssid *ssid, const char *var)
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for (i = 0; i < NUM_SSID_FIELDS; i++) {
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const struct parse_data *field = &ssid_fields[i];
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- if (os_strcmp(var, field->name) == 0)
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- return field->writer(field, ssid);
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+ if (os_strcmp(var, field->name) == 0) {
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+ char *ret = field->writer(field, ssid);
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+
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+ if (ret && has_newline(ret)) {
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+ wpa_printf(MSG_ERROR,
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+ "Found newline in value for %s; not returning it",
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+ var);
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+ os_free(ret);
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+ ret = NULL;
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+ }
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+
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+ return ret;
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+ }
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}
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return NULL;
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--
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1.9.1
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