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post-demo: some platforms cant handle NULL vsnprintf strings

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This commit is contained in:
Andy Green 2017-11-25 09:38:37 +08:00
parent 0060af62c5
commit 0ed131e6a7
1 changed files with 8 additions and 2 deletions
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10
plugins/protocol_post_demo.c
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@ -149,12 +149,18 @@ callback_post_demo(struct lws *wsi, enum lws_callback_reasons reason,
"<html><body><h1>Form results (after urldecoding)</h1>" "<html><body><h1>Form results (after urldecoding)</h1>"
"<table><tr><td>Name</td><td>Length</td><td>Value</td></tr>"); "<table><tr><td>Name</td><td>Length</td><td>Value</td></tr>");
for (n = 0; n < (int)ARRAY_SIZE(param_names); n++) for (n = 0; n < (int)ARRAY_SIZE(param_names); n++) {
p += lws_snprintf((char *)p, end - p, if (!lws_spa_get_string(pss->spa, n))
p += lws_snprintf((char *)p, end - p,
"<tr><td><b>%s</b></td><td>0</td><td>NULL</td></tr>",
param_names[n]);
else
p += lws_snprintf((char *)p, end - p,
"<tr><td><b>%s</b></td><td>%d</td><td>%s</td></tr>", "<tr><td><b>%s</b></td><td>%d</td><td>%s</td></tr>",
param_names[n], param_names[n],
lws_spa_get_length(pss->spa, n), lws_spa_get_length(pss->spa, n),
lws_spa_get_string(pss->spa, n)); lws_spa_get_string(pss->spa, n));
}
p += lws_snprintf((char *)p, end - p, "</table><br><b>filename:</b> %s, <b>length</b> %ld", p += lws_snprintf((char *)p, end - p, "</table><br><b>filename:</b> %s, <b>length</b> %ld",
pss->filename, pss->file_length); pss->filename, pss->file_length);